Headline
August 2023: GitHub PoCs, Vulristics, Qualys First-Party, Tenable ExposureAI, SC Awards and Rapid7, Anglo-Saxon list, MS Patch Tuesday, WinRAR, Juniper
Hello everyone! This month I decided NOT to make an episode completely dedicated to Microsoft Patch Tuesday. Instead, this episode will be an answer to the question of how my Vulnerability Management month went. A retrospection of some kind. Alternative video link (for Russia): https://vk.com/video-149273431_456239134 GitHub exploits and Vulristics This month I made some improvements […]
Hello everyone! This month I decided NOT to make an episode completely dedicated to Microsoft Patch Tuesday. Instead, this episode will be an answer to the question of how my Vulnerability Management month went. A retrospection of some kind.
Alternative video link (for Russia): https://vk.com/video-149273431_456239134
GitHub exploits and Vulristics
This month I made some improvements to my Vulristics vulnerability prioritization tool. These changes relate to the use of exploit data on Github. We all know that exploits are often posted on GitHub. But how adequate is this source in order to evaluate the exploitability?
PoC in Github
For example, there is an interesting PoC in GitHub repository on github. It contains the results of an automated search for exploits of CVE vulnerabilities on GitHub. There are currently PoCs for 4484 CVE IDs.
Distribution by years:
CVE-1999-: 4 CVE-2000-: 4CVE-2001-: 10 CVE-2002-: 14CVE-2003-: 6 CVE-2004-: 9CVE-2005-: 7 CVE-2006-: 13CVE-2007-: 18 CVE-2008-: 21CVE-2009-: 22 CVE-2010-: 25CVE-2011-: 27 CVE-2012-: 39CVE-2013-: 64 CVE-2014-: 128CVE-2015-: 144 CVE-2016-: 185CVE-2017-: 323 CVE-2018-: 407CVE-2019-: 504 CVE-2020-: 684CVE-2021-: 747 CVE-2022-: 739CVE-2023-*: 340
The total number of CVEs is growing, and so is the number of exploitable CVEs. ⤴️ But no one guarantees that PoC is functional and that there are no rickrolls or malware. Be careful.
For example, it contains Office RCE vulnerability (CVE-2023-36884) from the July Patch Tuesday. But if you look closely, everything is not so rosy. 😐 Let’s see.
- ❌ Maxwitat/CVE-2023-36884-Scripts-for-Intune-Remediation-SCCM-Compliance-Baseline – script for remediation
- ❌ deepinstinct/Storm0978-RomCom-Campaign – IOCs
- ❌ zerosorai/CVE-2023-36884 – remediation utility
- ❌ tarraschk/CVE-2023-36884-Checker – vulnerability detection script
- ❌ or2me/CVE-2023-36884_patcher – remediation utility
- ❌ ToddMaxey/CVE-2023-36884 – script for remediation
- ❌ ridsoliveira/Fix-CVE-2023-36884 – script for remediation
- ❌ raresteak/CVE-2023-36884 – information for remediation
There is no POC yet. 🤷♂️
So “PoC in GitHub” would be more appropriate to call “CVE mentions in GitHub”. It will highlight mentions of CVEs, but, of course, it will not show the context. Then only manual analysis or some automated classification will help you.
Vulristics vulners-use-github-exploits-flag
The ambiguity of exploitation data on GitHub is also bad for my Vulristics reports. For high-profile vulnerabilities, such as Zerologon (CVE-2020-1472), there are too many references to GitHub in the report, most of which are not related to exploits.
And it is very difficult to automatically understand which repositories contain exploits and which contain irrelevant content. And, as a rule, it is not really necessary. Fully functional exploit will most likely end up in specialized exploit packs, although it may happen with some delay.
Therefore, I think Vulristics users should be able to generate both reports containing as much information about exploits as possible (although it will be littered) and reports that take into account only known exploit packs.
I have added the option --vulners-use-github-exploits-flag, which can be either True or False. The default value is True.
I also added [source] links.
Exceptions
An exploit from GitHub, as a rule, ends up in a specialized exploit pack over time, BUT NOT ALWAYS! For example, Command Injection – SAP NetWeaver (CVE-2022-22536).
We see that exploits for this vulnerability are available only on the GitHub. And, judging by the description, they are valid.
And if we generate a Vulristics report with --vulners-use-github-exploits-flag "False", then we will lose this valuable information.
So be aware and use the option with caution. 😉
VM vendors updates****Qualys First-Party Application Risk Detection and Remediation
In early August, Qualys introduced new capabilities for analyzing the vulnerabilities of self-written (First-Party) and open source applications.
- Custom Assessment and Remediation (CAR) is a mechanism for adding your own detection scripts, including PowerShell and Python scripts. You can write your own detection script (for example, using the versions that the application security guys told you), add it to Qualys and get a list of vulnerable hosts. Such vulnerabilities will have a QID and can be treated as vulnerabilities detected by Qualys itself.
- Runtime Software Composition Analysis (SCA). During a vulnerability scan, not only the software itself is checked, but also the libraries used by this software. In fact, Qualys Agent runs through the file system and searches / analyzes library files (including Log4j). This is not a super new feature. I have seen such detections in Microsoft Defender for Endpoint for a long time. But apparently it becomes a mandatory feature.
Tenable ExposureAI
Tenable announced Vulnerability (Exposure) Management with generative AI similar to ChatGPT. The product (or rather technology) will be called ExposureAI and will be available as part of Tenable One.
Main features:
- It will be possible to make requests in a natural language.
- It will be possible to generate human-readable descriptions of Attack Path scenarios (this saves time when preparing reports).
- It will be possible to see insights “what needs to be done first”.
As with Cyclops Security, which announced similar functionality a little earlier, it all depends on how smart the system turns out to be and how bad mistakes it makes.
SC Awards and Rapid7
SC Awards continues to be fun. This year Rapid7 InsightVM received “Best Vulnerability Management Solution”. In the nomination there was Tenable – it’s ok. Do you know what other 3 giants and innovators of the VM market were there?
🔸 Palo Alto Networks Prisma Cloud – cloud-native application protection platform 😀
🔸 Lacework – cloud security platform 😄
🔸 Coalfire Ransomware Simulation-as-a-Service (RSaaS) 😆
Have the contest organizers heard of Qualys VM? 😏
Apparently, so that Tenable would not be offended, they were given “Best Risk / Policy Management Solution” (Qualys was also in this nomination) and “Best Security Company”. The company is the best, but apparently their VM is so-so, Rapid7’s solution is better. 🙃 The only pity is that Rapid7 seems to have problems with sales of this best VM solution. “Rapid7 will lay off about 18 per cent of its workforce, around 470 employees, with significant cuts to sales and engineering – as well as permanently close some office locations”.
Now let’s talk about vulnerabilities.
Anglo-Saxon vulnerability lists
Anglo-Saxon state security agencies from 5 countries issued a joint advisory “2022’s Top Routinely Exploited Vulnerabilities“. I took this report, wrote out the CVE references and released 2 Vulristics reports:
- TOP 12 vulnerabilities
- Extended with all vulnerabilities (42) from the advisory
In the Top 12 Vulnerabilities, all CVEs have links to exploits and signs of exploitation in the wild. All of them are Urgent, except for one, because it is EoP in the not-so-common Workspace One. The most critical are RCEs in Apache Log4j2, Microsoft Exchange, and Confluence.
In the extended report, all CVEs have the sign of exploitation in the wild, but there are 6 vulnerabilities without links to exploits and therefore with Critical/High criticality. The most critical are RCEs in Apache HTTP Server, Apache Log4j2, Windows RDP and Microsoft Exchange.
It is worth noting that the extended list contains such Oldies But Goodies vulnerabilities as:
Zerologon (CVE-2020-1472). A vulnerability in the cryptography of Microsoft’s Netlogon process that allows an attack against Microsoft Active Directory domain controllers
Microsoft Office RCE (CVE-2017-11882). The PoC for this vulnerability appeared a week after the publication in 2017 and since then, for more than 5 years, it has been actively exploited. 🙈
Compared to last year advisory, GitLab and exotics like Hikvision and Buffalo are gone. The set of CVEs looks better.
Commands for those who want to build a report themselves in Vulristics using comments for CVEs from AA23-215A.
$ cat AA23-215A_comments.txt | grep -v "30 Additional" | egrep -o "CVE-[0-9]-[0-9]" | sort | uniq > AA23-215A_cves_top12.txt
$ cat AA23-215A_comments.txt | egrep -o "CVE-[0-9]-[0-9]" | sort | uniq > AA23-215A_cves.txt
$ python3 vulristics.py --report-type "cve_list" --cve-project-name "AA23-215A" --cve-list-path "AA23-215A_cves.txt" --cve-comments-path "AA23-215A_comments.txt" --cve-data-sources "ms,nvd,epss,vulners,attackerkb" --rewrite-flag "True"
$ python3 vulristics.py --report-type "cve_list" --cve-project-name "AA23-215A_top12" --cve-list-path "AA23-215A_cves_top12.txt" --cve-comments-path "AA23-215A_comments.txt" --cve-data-sources "ms,nvd,epss,vulners,attackerkb" --rewrite-flag "False"
Funny detail: 8 agencies from 5 countries released this, but there was no one who carefully read and noticed that in several places the identifier for Log4Shell is written as “CVE-2021- 44228” with a space. Both in pdf, and in the web-version. 😏
August Microsoft Patch Tuesday
My impressions of the August Microsoft Patch Tuesday – nothing special. 🫠
- All vulnerabilities: 103
- Urgent: 0
- Critical: 1
- High: 33
- Medium: 69
- Low: 0
Formally, the most critical vulnerability is Denial of Service – .NET and Visual Studio (CVE-2023-38180), because there are signs of exploitation. There are no details, but it is somehow doubtful. 🤡
No more vulnerabilities with public exploits or signs of exploitation.
Several Remote Code Executions – Microsoft Exchange (CVE-2023-35368, CVE-2023-38185, CVE-2023-35388, CVE-2023-38182). 3 of them definitely require authentication, one is unclear. This authentication can potentially be obtained through Elevation of Privilege – Microsoft Exchange (CVE-2023-21709) – “This vulnerability allows a remote, unauthenticated attacker to log in as another user”. It’s better to patch!
Remote Code Execution – Microsoft Teams (CVE-2023-29328, CVE-2023-29330). Fortunately, in Russia it’s not popular anymore.
There is also a bunch of EoPs in the Windows kernel&components.
Full report: ms_patch_tuesday_august2023_report
Other important vulnerabilities
Among other vulnerabilities of this month, I would like to highlight:
Actively exploited since April 2023 WinRAR Extension Spoofing (CVE-2023-38831), which also has a public exploit. I highly recommend installing the WinRAR 6.23 update, which also fixes the potentially dangerous RCE CVE-2023-40477.
Numerous vulnerabilities in the J-Web component (web console) of the Juniper Networks Junos operating system on SRX and EX series devices. These are the vulnerabilities that lead to RCE and for them there is a detailed review and a PoC.
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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Categories: Exploits and vulnerabilities Categories: News Microsoft has announced patches for 87 vulnerabilities this month, including two that are being actively exploited. (Read more...) The post August Patch Tuesday stops actively exploited attack chain and more appeared first on Malwarebytes Labs.
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Microsoft has patched a total of 74 flaws in its software as part of the company's Patch Tuesday updates for August 2023, down from the voluminous 132 vulnerabilities the company fixed last month. This comprises six Critical and 67 Important security vulnerabilities. Also released by the tech giant are two defense-in-depth updates for Microsoft Office (ADV230003) and the Memory Integrity System
Microsoft has patched a total of 74 flaws in its software as part of the company's Patch Tuesday updates for August 2023, down from the voluminous 132 vulnerabilities the company fixed last month. This comprises six Critical and 67 Important security vulnerabilities. Also released by the tech giant are two defense-in-depth updates for Microsoft Office (ADV230003) and the Memory Integrity System
Microsoft has patched a total of 74 flaws in its software as part of the company's Patch Tuesday updates for August 2023, down from the voluminous 132 vulnerabilities the company fixed last month. This comprises six Critical and 67 Important security vulnerabilities. Also released by the tech giant are two defense-in-depth updates for Microsoft Office (ADV230003) and the Memory Integrity System
Microsoft has patched a total of 74 flaws in its software as part of the company's Patch Tuesday updates for August 2023, down from the voluminous 132 vulnerabilities the company fixed last month. This comprises six Critical and 67 Important security vulnerabilities. Also released by the tech giant are two defense-in-depth updates for Microsoft Office (ADV230003) and the Memory Integrity System
Microsoft Corp. today issued software updates to plug more than 70 security holes in its Windows operating systems and related products, including a patch that addresses multiple zero-day vulnerabilities currently being exploited in the wild.
Microsoft Corp. today issued software updates to plug more than 70 security holes in its Windows operating systems and related products, including a patch that addresses multiple zero-day vulnerabilities currently being exploited in the wild.
The only vulnerability Microsoft states is being exploited in the wild is CVE-2023-38180, a denial-of-service vulnerability in .NET and Microsoft Visual Studio.
The only vulnerability Microsoft states is being exploited in the wild is CVE-2023-38180, a denial-of-service vulnerability in .NET and Microsoft Visual Studio.
The only vulnerability Microsoft states is being exploited in the wild is CVE-2023-38180, a denial-of-service vulnerability in .NET and Microsoft Visual Studio.
The only vulnerability Microsoft states is being exploited in the wild is CVE-2023-38180, a denial-of-service vulnerability in .NET and Microsoft Visual Studio.
The only vulnerability Microsoft states is being exploited in the wild is CVE-2023-38180, a denial-of-service vulnerability in .NET and Microsoft Visual Studio.
The only vulnerability Microsoft states is being exploited in the wild is CVE-2023-38180, a denial-of-service vulnerability in .NET and Microsoft Visual Studio.
.NET and Visual Studio Denial of Service Vulnerability
Microsoft Teams Remote Code Execution Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Remote Code Execution Vulnerability
Microsoft Teams Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Hello everyone! This episode will be about Microsoft Patch Tuesday for July 2023, including vulnerabilities that were added between June and July Patch Tuesdays. Alternative video link (for Russia): https://vk.com/video-149273431_456239131 As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities. Vulristics improvements I optimized the detection of the vulnerable product and the type […]
Categories: Business Tags: microsoft Tags: zero-day Tags: exploit Tags: CVE-2023-36884 Tags: storm-0978 Tags: email Tags: phish Tags: phishing Tags: Ukraine We take a look at reports of an exploit being deployed via booby trapped Word documents. (Read more...) The post Zero-day deploys remote code execution vulnerability via Word documents appeared first on Malwarebytes Labs.
Microsoft on Tuesday released updates to address a total of 130 new security flaws spanning its software, including six zero-day flaws that it said have been actively exploited in the wild. Of the 130 vulnerabilities, nine are rated Critical and 121 are rated Important in severity. This is in addition to eight flaws the tech giant patched in its Chromium-based Edge browser towards the end of
Categories: Exploits and vulnerabilities Categories: News Tags: Microsoft Tags: Adobe Tags: Apple Tags: Android Tags: Cisco Tags: Fortinet Tags: MOVEit Tags: Mozilla Tags: SAP Tags: VMware Tags: CVE-2023-32049 Tags: CVE-2023-35311 Tags: CVE-2023-32046 Tags: CVE-2023-36874 Tags: CVE-2023-36844 For the July 2023 Patch Tuesday, Microsoft has issued security updates for 130 vulnerabilities, four of which are known to have been actively exploited. (Read more...) The post Update now! Microsoft patches a whopping 130 vulnerabilities appeared first on Malwarebytes Labs.
Microsoft Corp. today released software updates to quash 130 security bugs in its Windows operating systems and related software, including at least five flaws that are already seeing active exploitation. Meanwhile, Apple customers have their own zero-day woes again this month: On Monday, Apple issued (and then quickly pulled) an emergency update to fix a zero-day vulnerability that is being exploited on MacOS and iOS devices.
Microsoft is investigating reports of a series of remote code execution vulnerabilities impacting Windows and Office products. Microsoft is aware of targeted attacks that attempt to exploit these vulnerabilities by using specially-crafted Microsoft Office documents. An attacker could create a specially crafted Microsoft Office document that enables them to perform remote code execution in the context of the victim. However, an attacker would have to convince the victim to open the malicious file. Upon completion of this investigation, Microsoft will take the appropriate action to help protect our customers. This might include providing a security update through our monthly release process or providing an out-of-cycle security update, depending on customer needs. Please see the Microsoft Threat Intelligence Blog https://aka.ms/Storm-0978 Entry for important information about steps you can take to protect your system from this vulnerability. This CVE will be updated with new inform...
The notorious APT15 used common malware tools and a third-generation custom "Graphican" backdoor to continue its information gathering exploits, this time against foreign ministries.
New research shows that 57 vulnerabilities that threat actors are currently using in ransomware attacks enable everything from initial access to data theft.
By Deeba Ahmed An APT group known as Tonto Team has tried targeting the Singapore-based Group-IB cybersecurity firm for the second time. This is a post from HackRead.com Read the original post: Chinese Hackers Keep Targeting Group-IB Cybersecurity Firm
Several artifacts from recent attacks strongly suggest a connection between the two operations, researchers say.
Ransomware and pre-ransomware engagements make up 40 percent of threats seen this quarter By Caitlin Huey. For the first time since compiling these reports, Cisco Talos Incident Response saw an equal number of ransomware and pre-ransomware engagements, making up nearly 40 percent of threats this quarter. It can be difficult to determine what constitutes a pre-ransomware attack if ransomware never executes and encryption does not take place. However, Talos IR assesses that the combination of Cobalt Strike and credential-harvesting tools like Mimikatz, paired with enumeration and discovery techniques, indicates a high likelihood that ransomware is the final objective. This quarter featured a variety of publicly available tools and scripts hosted on GitHub repositories or other third-party websites to support operations across multiple stages of the attack lifecycle. This activity coincides with a general increase in the use of other dual-use tools, such as the legitimate red-teaming ...
A lack of MFA remains one of the biggest impediments to enterprise security.
A parsing vulnerability for the MessageSet type in the ProtocolBuffers versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 3.21.5 for protobuf-cpp, and versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 4.21.5 for protobuf-python can lead to out of memory failures. A specially crafted message with multiple key-value per elements creates parsing issues, and can lead to a Denial of Service against services receiving unsanitized input. We recommend upgrading to versions 3.18.3, 3.19.5, 3.20.2, 3.21.6 for protobuf-cpp and 3.18.3, 3.19.5, 3.20.2, 4.21.6 for protobuf-python. Versions for 3.16 and 3.17 are no longer updated.
Categories: Exploits and vulnerabilities Categories: News CISA updated its catalog of actively exploited vulnerabilities. Make sure you update your software before the due date! (Read more...) The post CISA wants you to patch these actively exploited vulnerabilities before September 8 appeared first on Malwarebytes Labs.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday moved to add a critical SAP security flaw to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. The issue in question is CVE-2022-22536, which has received the highest possible risk score of 10.0 on the CVSS vulnerability scoring system and was addressed by SAP as part of its Patch
A financially motivated cybercrime group has been linked to an ongoing wave of attacks aimed at hospitality, hotel, and travel organizations in Latin America with the goal of installing malware on compromised systems. Enterprise security firm Proofpoint, which is tracking the group under the name TA558 dating all the way back to April 2018, called it a "small crime threat actor." "Since 2018,
Over a dozen military-industrial complex enterprises and public institutions in Afghanistan and Europe have come under a wave of targeted attacks since January 2022 to steal confidential data by simultaneously making use of six different backdoors. Russian cybersecurity firm Kaspersky attributed the attacks "with a high degree of confidence" to a China-linked threat actor tracked by Proofpoint
By Deeba Ahmed Research reveals that around 80% of all malware attacks used MS Office flaws. Atlas VPN has shared its… This is a post from HackRead.com Read the original post: Microsoft Office Most Exploited Software in Malware Attacks – Report
The dangerous malware appears to be well and truly back in action, sporting new variants and security-dodging behaviors in a wave of recent phishing campaigns.
The malware is using spreadsheets, documents, and other types of Microsoft Office attachments in a new and improved version that is often able to bypass email gateway-security scanners.
Notable new infection chain uses PDF to embed malicious files, load remote exploits, shellcode encryption, and more, new research shows.
Microsoft Word also leveraged in the email campaign, which uses a 22-year-old Office RCE bug.
An espionage-focused threat actor known for targeting China, Pakistan, and Saudi Arabia has expanded to set its sights on Bangladeshi government organizations as part of an ongoing campaign that commenced in August 2021. Cybersecurity firm Cisco Talos attributed the activity with moderate confidence to a hacking group dubbed the Bitter APT based on overlaps in the command-and-control (C2)
Cisco Talos has observed an ongoing malicious campaign since August 2021 from the Bitter APT group that appears to target users in Bangladesh, a change from the attackers' usual victims.As part of this, there's a new trojan based on Apost Talos is calling "ZxxZ," that, among other... [[ This is only the beginning! Please visit the blog for the complete entry ]]
SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary data. This way, the attacker can execute functions impersonating the victim or poison intermediary Web caches. A successful attack could result in complete compromise of Confidentiality, Integrity and Availability of the system.
Microsoft addressed a Critical RCE vulnerability affecting the Netlogon protocol (CVE-2020-1472) on August 11, 2020. We are reminding our customers that beginning with the February 9, 2021 Security Update release we will be enabling Domain Controller enforcement mode by default. This will block vulnerable connections from non-compliant devices. DC enforcement mode requires that all Windows and non-Windows devices use secure RPC with Netlogon secure channel unless customers have explicitly allowed the account to be vulnerable by adding an exception for the non-compliant device.
Microsoft has received a small number of reports from customers and others about continued activity exploiting a vulnerability affecting the Netlogon protocol (CVE-2020-1472) which was previously addressed in security updates starting on August 11, 2020. If the original guidance is not applied, the vulnerability could allow an attacker to spoof a domain controller account that could be used to steal domain credentials and take over the domain.
We have released the February security updates to provide additional protections against malicious attackers. As a best practice, we encourage customers to turn on automatic updates. More information about this month’s security updates can be found in the Security Update Guide.