Headline
Joint Advisory AA22-279A and Vulristics
Hello everyone! This episode will be about the new hot twenty vulnerabilities from CISA, NSA and FBI, Joint cybersecurity advisory (CSA) AA22-279A, and how I analyzed these vulnerabilities using my open source project Vulristics. Alternative video link (for Russia): https://vk.com/video-149273431_456239105 Americans can’t just release a list of “20 vulnerabilities most commonly exploited in attacks on […]
Hello everyone! This episode will be about the new hot twenty vulnerabilities from CISA, NSA and FBI, Joint cybersecurity advisory (CSA) AA22-279A, and how I analyzed these vulnerabilities using my open source project Vulristics.
Alternative video link (for Russia): https://vk.com/video-149273431_456239105
Americans can’t just release a list of “20 vulnerabilities most commonly exploited in attacks on American organizations.” They like to add geopolitics and point the finger at some country. Therefore, I leave the attack attribution mentioned in the advisory title without comment.
But I like such lists of vulnerabilities for a number of reasons:
- Such lists of vulnerabilities show which CVEs need to be addressed. This is the most obvious. If you notice vulnerabilities from the list in your infrastructure, start fixing them as soon as possible.
- Such lists of vulnerabilities show the software and hardware products that are most important to monitor. This means that your vulnerability scanner must support this software very well. Make sure you can verify this.
- Such lists of vulnerabilities show groups of software and hardware products that need to be monitored first. Usually these are products that are available to a wide range of users and are inconvenient to upgrade.
- Such lists of vulnerabilities show the types of vulnerabilities that you need to pay attention to first.
- Such lists of vulnerabilities are relatively compact and can be easily analyzed even manually.
I can’t help but notice that the quality of the advisory is not very high. For example, the description of vulnerabilities was automatically taken from NVD. Including this:
“Microsoft Exchange Server remote code execution vulnerability. This CVE ID differs from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26858, CVE-2021-27065, and CVE-2021-27078”.
Not very informative, right? This joint advisory was released by three big serious organizations. They could work harder and write a unique text for each of the 20 CVEs. But no one seems to care.
Here is a list of all vulnerabilities from the advisory:
- Apache Log4j CVE-2021-44228 Remote Code Execution
- Pulse Connect Secure CVE-2019-11510 Arbitrary File Read
- GitLab CE/EE CVE-2021-22205 Remote Code Execution
- Atlassian CVE-2022-26134 Remote Code Execution
- Microsoft Exchange CVE-2021-26855 Remote Code Execution
- F5 Big-IP CVE-2020-5902 Remote Code Execution
- VMware vCenter Server CVE-2021-22005 Arbitrary File Upload
- Citrix ADC CVE-2019-19781 Path Traversal
- Cisco Hyperflex CVE-2021-1497 Command Line Execution
- Buffalo WSR CVE-2021-20090 Relative Path Traversal
- Atlassian Confluence Server and Data Center CVE-2021-26084 Remote Code Execution
- Hikvision Webserver CVE-2021-36260 Command Injection
- Sitecore XP CVE-2021-42237 Remote Code Execution
- F5 Big-IP CVE-2022-1388 Remote Code Execution
- Apache CVE-2022-24112 Authentication Bypass by Spoofing
- ZOHO CVE-2021-40539 Remote Code Execution
- Microsoft CVE-2021-26857 Remote Code Execution
- Microsoft CVE-2021-26858 Remote Code Execution
- Microsoft CVE-2021-27065 Remote Code Execution
- Apache HTTP Server CVE-2021-41773 Path Traversal
Of course, I did not deny myself the pleasure of using this list of CVEs as input for my Vulristics vulnerability prioritization tool. Just to see how Vulristics handles it and tweak Vulristics if needed.
Here is the command I used to generate the report:
$ python3.8 vulristics.py --report-type "cve_list" --cve-project-name "AA22-279A" --cve-list-path joint_cves.txt --cve-data-sources "ms,nvd,vulners,attackerkb" --cve-comments-path comments.txt --rewrite-flag "True"
The full report is here: https://avleonov.com/vulristics_reports/aa22-279a_report_with_comments_ext_img.html
Vulnerable Products
If you look at the list of vulnerable software and hardware products, then some of them, obviously, should have been included in this advisory. Because lately there have been a lot of publications about how attackers exploit the vulnerabilities in these products:
- Apache HTTP Server
- Apache Log4j2
- GitLab
- Microsoft Exchange
- Confluence Server
- Zoho ManageEngine ADSelfService Plus
- Pulse Connect Secure
The second group of products. For them, there were also publications about attacks. But it seems that these are more niche products and are less perceived as targets for attackers:
- BIG-IP
- Citrix Application Delivery Controller
- VMware vCenter
- Cisco HyperFlex HX
And finally, there are quite exotic products that apparently reflect the specifics of American IT:
- Sitecore Experience Platform (XP)
- Hikvision Web Server
- Apache APISIX
- Buffalo WSR
Criticality of Vulnerabilities
Vulristics has identified all vulnerabilities as vulnerabilities of the highest criticality level (Urgent). Vulristics found public exploits for all vulnerabilities.
At the same time, if you look at CVSS, then there is this:
All vulnerabilities: 20
Critical: 16
High: 4
Medium: 0
Low: 0
So if you are using CVSS for prioritization, don’t forget about the High level vulnerabilities.
Detected Types of Vulnerabilities
- Remote Code Execution
- Command Injection
- Arbitrary File Reading
- Authentication Bypass
- Path Traversal
As we can see, all vulnerabilities are obviously critical except for one “Path Traversal”:
Path Traversal – Citrix Application Delivery Controller (CVE-2019-19781)
The description of the vulnerability leaves no room for detecting another type:
“An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0. They allow Directory Traversal”.
The same type is indicated in the advisory AA22-279A: Citrix ADC CVE-2019-19781 Path Traversal
And only in the description of the exploit we can see that this is in fact RCE: “This tool exploits a directory traversal bug within Citrix ADC (NetScalers) which calls a perl script that is used to append files in an XML format to the victim machine. This in turn allows for remote code execution.”
Well, this is another reminder to us that we should not do hard filtering by vulnerability type. It’s also not a good idea to trust the description from NVD. The type of vulnerability may change over time, and no one will make changes to the description in NVD.
In some cases, Vulristics can help to more accurately determine the type of vulnerability:
AA22-279A: Apache HTTP Server CVE-2021-41773 Path Traversal
Vulristics: Remote Code Execution – Apache HTTP Server (CVE-2021-41773)
Why? Because we can read in the description: “If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution.”
But of course Vulristics is not a silver bullet. It is difficult to come up with something here other than manual analysis of publications about vulnerabilities and exploits.
I also cannot help but point out that for some of the vulnerabilities, Vulrisitcs determined the types of vulnerabilities more correctly in accordance with the description:
AA22-279A: GitLab CE/EE CVE-2021-22205 Remote Code Execution
Vulristics: Command Injection – GitLab (CVE-2021-22205) – Urgent [947]
“… which resulted in a remote command execution.”
AA22-279A: Sitecore XP CVE-2021-42237 Remote Code Execution
Vulristics: Command Injection – Sitecore Experience Platform (XP) (CVE-2021-42237)
“… it is possible to achieve remote command execution on the machine.”
AA22-279A: VMware vCenter Server CVE-2021-22005 Arbitrary File Upload
Vulristics: Remote Code Execution – VMware vCenter (CVE-2021-22005)
“…may exploit this issue to execute code on vCenter Server by uploading a specially crafted file.”
AA22-279A: F5 Big-IP CVE-2022-1388 Remote Code Execution
Vulristics: Authentication Bypass – BIG-IP (CVE-2022-1388)
… undisclosed requests may bypass iControl REST authentication“
AA22-279A: Apache HTTP Server CVE-2021-41773 Path Traversal
Vulristics: Remote Code Execution – Apache HTTP Server (CVE-2021-41773)
“… this could allow for remote code execution.”
AA22-279A: Apache CVE-2022-24112 Authentication Bypass by Spoofing
Vulristics: Remote Code Execution – Apache APISIX (CVE-2022-24112)
“… is vulnerable to remote code execution.”
AA22-279A: Buffalo WSR CVE-2021-20090 Relative Path Traversal
Vulristics: Authentication Bypass – Buffalo WSR (CVE-2021-20090)
“… allow unauthenticated remote attackers to bypass authentication.”
Therefore, do not rush to trust the vulnerability type from the CISA Known Exploited Vulnerabilities Catalog and take it into account when prioritizing vulnerabilities.
Hi! My name is Alexander and I am a Vulnerability Management specialist. You can read more about me here. Currently, the best way to follow me is my Telegram channel @avleonovcom. I update it more often than this site. If you haven’t used Telegram yet, give it a try. It’s great. You can discuss my posts or ask questions at @avleonovchat.
А всех русскоязычных я приглашаю в ещё один телеграмм канал @avleonovrus, первым делом теперь пишу туда.
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Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels. Alternative video link (for Russia): https://vk.com/video-149273431_456239097 What’s in this episode: Microsoft released a propaganda […]
Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels. Alternative video link (for Russia): https://vk.com/video-149273431_456239097 What’s in this episode: Microsoft released a propaganda […]
Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels. Alternative video link (for Russia): https://vk.com/video-149273431_456239097 What’s in this episode: Microsoft released a propaganda […]
Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels. Alternative video link (for Russia): https://vk.com/video-149273431_456239097 What’s in this episode: Microsoft released a propaganda […]
Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels. Alternative video link (for Russia): https://vk.com/video-149273431_456239097 What’s in this episode: Microsoft released a propaganda […]
Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels. Alternative video link (for Russia): https://vk.com/video-149273431_456239097 What’s in this episode: Microsoft released a propaganda […]
Open source utility exposes payloads without running vulnerable Java code
MobileIron Core is affected by the Log4Shell vulnerability whereby a JNDI string sent to the server will cause it to connect to the attacker and deserialize a malicious Java object. This results in OS command execution in the context of the tomcat user. This Metasploit module will start an LDAP server that the target will need to connect to.
While attackers continue to rely on older, unpatched vulnerabilities, many are jumping on new vulnerabilities as soon as they are disclosed.
While attackers continue to rely on older, unpatched vulnerabilities, many are jumping on new vulnerabilities as soon as they are disclosed.
While attackers continue to rely on older, unpatched vulnerabilities, many are jumping on new vulnerabilities as soon as they are disclosed.
While attackers continue to rely on older, unpatched vulnerabilities, many are jumping on new vulnerabilities as soon as they are disclosed.
While attackers continue to rely on older, unpatched vulnerabilities, many are jumping on new vulnerabilities as soon as they are disclosed.
OX App Suite through 7.10.6 allows SSRF because multipart/form-data boundaries are predictable, and this can lead to injection into internal Documentconverter API calls.
By Nate Pors and Terryn Valikodath. Executive summary In a recent malspam campaign delivering the Qakbot banking trojan, Cisco Talos Incident Response (CTIR) observed the adversary using aggregated, old email threads from multiple organizations that we assess were likely harvested during the 2021 ProxyLogon-related compromises targeting vulnerable Microsoft Exchange servers. This campaign relies on external thread hijacking, whereby the adversary is likely using a bulk aggregation of multiple organizations’ harvested emails to launch focused phishing campaigns against previously uncompromised organizations. This differs from the more common approach to thread hijacking, in which attackers use a single compromised organization’s emails to deliver their threat. This many-to-one approach is unique from what we have generally observed in the past and is likely an indirect effect of the widespread compromises and exfiltration of large volumes of email from 2020 and 2021. Understandi...
Insiders could become more vulnerable to cybercrime recruitment efforts, new report says.
Commodity malware usage surpasses ransomware by narrow margin By Caitlin Huey. For the first time in more than a year, ransomware was not the top threat Cisco Talos Incident Response (CTIR) responded to this quarter, as commodity malware surpassed ransomware by a narrow margin. This is likely due to several factors, including the closure of several ransomware groups, whether it be of their own volition or the actions of global law enforcement agencies and governments. Commodity malware was the top observed threat this quarter, a notable development given the general decrease in observations of attacks leveraging commodity trojans in CTIR engagements since 2020. These developments coincide with a general resurgence of certain email-based trojans in recent months, as law enforcement and technology companies have continued to attempt to disrupt and affect email-based malware threats like Emotet and Trickbot. This quarter featured malware such as the Remcos remote access trojan ...
A large software development company whose software is used by different state entities in Ukraine was at the receiving end of an "uncommon" piece of malware, new research has found. The malware, first observed on the morning of May 19, 2022, is a custom variant of the open source backdoor known as GoMet and is designed for maintaining persistent access to the network. "This access could be
Executive summary Since the Russian invasion of Ukraine began, Ukrainians have been under a nearly constant barrage of cyber attacks. Working jointly with Ukrainian organizations, Cisco Talos has discovered a fairly uncommon piece of malware targeting Ukraine — this time aimed at a large software development company whose software is used in various state organizations within Ukraine. We believe that this campaign is likely sourced by Russian state-sponsored actors or those acting in their interests. As this firm is involved in software development, we cannot ignore the possibility that the perpetrating threat actor's intent was to gain access to source a supply chain-style attack, though at this time we do not have any evidence that they were successful. Cisco Talos confirmed that the malware is a slightly modified version of the open-source backdoor named "GoMet." The malware was first observed on March 28, 2022. GoMet backdoor The story of this backdoor is rather curious — ther...
The 8220 cryptomining group has expanded in size to encompass as many as 30,000 infected hosts, up from 2,000 hosts globally in mid-2021. "8220 Gang is one of the many low-skill crimeware gangs we continually observe infecting cloud hosts and operating a botnet and cryptocurrency miners through known vulnerabilities and remote access brute forcing infection vectors," Tom Hegel of SentinelOne
Pexip Infinity before 27.3 allows remote attackers to trigger a software abort via One Touch Join.
Pexip Infinity 27.x before 27.3 allows remote attackers to trigger a software abort via single-sign-on if a random Universally Unique Identifier is guessed.
Pexip Infinity before 27.3 allows remote attackers to trigger a software abort via the Session Initiation Protocol.
Pexip Infinity before 27.3 allows remote attackers to trigger a software abort, and possibly enumerate usernames, via One Touch Join.
A cloud threat actor group tracked as 8220 has updated its malware toolset to breach Linux servers with the goal of installing crypto miners as part of a long-running campaign. "The updates include the deployment of new versions of a crypto miner and an IRC bot," Microsoft Security Intelligence said in a series of tweets on Thursday. "The group has actively updated its techniques and payloads
An unauthenticated remote code execution vulnerability found in Zoho’s compliance tool could leave organizations exposed to an information disclosure catastrophe, new analysis shows.
The previously unknown state-sponsored group is compromising industrial targets with the ShadowPad malware before burrowing deeper into networks.
Swarms of breach attempts against the Atlassian Confluence vulnerability are likely to continue for years, researchers say, averaging 20,000 attempts daily as of this week.
Entities located in Afghanistan, Malaysia, and Pakistan are in the crosshairs of an attack campaign that targets unpatched Microsoft Exchange Servers as an initial access vector to deploy the ShadowPad malware. Russian cybersecurity firm Kaspersky, which first detected the activity in mid-October 2021, attributed it to a previously unknown Chinese-speaking threat actor. Targets include
Pure Storage FlashArray products running Purity//FA 6.2.0 - 6.2.3, 6.1.0 - 6.1.12, 6.0.0 - 6.0.8, 5.3.0 - 5.3.17, 5.2.x and prior Purity//FA releases, and Pure Storage FlashBlade products running Purity//FB 3.3.0, 3.2.0 - 3.2.4, 3.1.0 - 3.1.12, 3.0.x and prior Purity//FB releases are vulnerable to a privilege escalation via the manipulation of Python environment variables which can be exploited by a logged-in user to escape a restricted shell to an unrestricted shell with root privileges. No other Pure Storage products or services are affected. Remediation is available from Pure Storage via a self-serve “opt-in” patch, manual patch application or a software upgrade to an unaffected version of Purity software.
In this post, we break down 5 times hackers used security vulnerabilities in 2021 to attack governments and businesses. The post Security vulnerabilities: 5 times that organizations got hacked appeared first on Malwarebytes Labs.
A recently patched critical security flaw in Atlassian Confluence Server and Data Center products is being actively weaponized in real-world attacks to drop cryptocurrency miners and ransomware payloads. In at least two of the Windows-related incidents observed by cybersecurity vendor Sophos, adversaries exploited the vulnerability to deliver Cerber ransomware and a crypto miner called z0miner
Most of the attacks involve the use of automated exploits, security vendor says.
The vulnerability remains unpatched on many versions of the collaboration tool and has potential to create a SolarWinds-type scenario.
China suspected in assaults against enterprises running collaboration platform
Atlassian on Friday rolled out fixes to address a critical security flaw affecting its Confluence Server and Data Center products that have come under active exploitation by threat actors to achieve remote code execution. Tracked as CVE-2022-26134, the issue is similar to CVE-2021-26084 — another security flaw the Australian software company patched in August 2021. Both relate to a case of
Cisco Talos is monitoring reports of an actively exploited zero-day vulnerability in Confluence Data Center and Server. Confluence is a Java-based corporate Wiki employed by numerous enterprises. At this time, it is confirmed that all supported versions of Confluence are affected by this... [[ This is only the beginning! Please visit the blog for the complete entry ]]
In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1.
An remote code execution (RCE) vulnerability in all versions of the popular Confluence collaboration platform can be abused in credential harvesting, cyber espionage, and network backdoor attacks.
Atlassian has warned of a critical unpatched remote code execution vulnerability impacting Confluence Server and Data Center products that it said is being actively exploited in the wild. The Australian software company credited cybersecurity firm Volexity for identifying the flaw, which is being tracked as CVE-2022-26134. "Atlassian has been made aware of current active exploitation of a
By Jon Munshaw. Welcome to this week’s edition of the Threat Source newsletter. I will openly admit that I still own a “classic” iPod — the giant brick that weighed down my skinny jeans in high school and did nothing except play music. There are dozens of hours of music on there that I... [[ This is only the beginning! Please visit the blog for the complete entry ]]
This Metasploit module exploits an authentication bypass vulnerability in the F5 BIG-IP iControl REST service to gain access to the admin account, which is capable of executing commands through the /mgmt/tm/util/bash endpoint. Successful exploitation results in remote code execution as the root user.
At least one group of threat actors is using the recently patched vulnerability in F5 BIG-IP to wipe the file system of vulnerable devices. The post F5 BIG-IP vulnerability is now being used to disable servers appeared first on Malwarebytes Labs.
The bug has a severe rating of 9.8, public exploits are released.
F5 BIG-IP remote code execution proof of concept exploit that leverages the vulnerability identified in CVE-2022-1388.
Users should patch immediately
On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all 12.1.x and 11.6.x versions, undisclosed requests may bypass iControl REST authentication. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
The Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.1-13 didn’t mimic the permissions of the JVM being patched, allowing it to escalate privileges.
Zoho ManageEngine ADSelfService Plus before 6121, ADAuditPlus 7060, Exchange Reporter Plus 5701, and ADManagerPlus 7131 allow NTLM Hash disclosure during certain storage-path configuration steps.
If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier.
Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.27 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in takeover of MySQL Connectors. CVSS 3.1 Base Score 6.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H).
A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier.
Insufficient Input Validation in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 allows an authenticated remote attacker with Object Modification privileges to insert arbitrary HTML without code execution.
The vCenter Server contains multiple local privilege escalation vulnerabilities due to improper permissions of files and directories. An authenticated local user with non-administrative privilege may exploit these issues to elevate their privileges to root on vCenter Server Appliance.
A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation, attacker can exploit the vulnerability to launch a command injection attack by sending some messages with malicious commands.
In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.
Improper Access Control vulnerability in web service of Secomea SiteManager allows local attacker without credentials to gather network information and configuration of the SiteManager. This issue affects: Secomea SiteManager All versions prior to 9.5 on Hardware.
This guidance will help customers address threats taking advantage of the recently disclosed Microsoft Exchange Server on-premises vulnerabilities CVE-2021-26855, CVE-2021-26858, CVE-2021-26857, and CVE-2021-27065, which are being exploited. We strongly urge customers to immediately update systems. Failing to address these vulnerabilities can result in compromise of your on-premises Exchange Server and, potentially, other parts of your internal network.
We have been actively working with customers through our customer support teams, third-party hosters, and partner network to help them secure their environments and respond to associated threats from the recent Exchange Server on-premises attacks. Based on these engagements we realized that there was a need for a simple, easy to use, automated solution that would meet the needs of customers using both current and out-of-support versions of on-premises Exchange Server.
Update March 15, 2021: If you have not yet patched, and have not applied the mitigations referenced below, a one-click tool, the Exchange On-premises Mitigation Tool is now our recommended path to mitigate until you can patch. Microsoft previously blogged our strong recommendation that customers upgrade their on-premises Exchange environments to the latest supported version.
Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27078.
On March 2nd, we released several security updates for Microsoft Exchange Server to address vulnerabilities that are being used in ongoing attacks. Due to the critical nature of these vulnerabilities, we recommend that customers protect their organizations by applying the patches immediately to affected systems. The vulnerabilities affect Exchange Server versions 2013, 2016, and 2019, while Exchange Server 2010 is also being updated for defense-in-depth purposes.
Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.
In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, and 8.2RX before 8.2R12.1, users using SAML authentication with the Reuse Existing NC (Pulse) Session option may see authentication leaks.
Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x before 9.0.0.M12 if JmxRemoteLifecycleListener is used and an attacker can reach JMX ports. The issue exists because this listener wasn't updated for consistency with the CVE-2016-3427 Oracle patch that affected credential types.