Security
Headlines
HeadlinesLatestCVEs

Headline

Rackspace Confirms Play Ransomware Gang Responsible for Recent Breach

Cloud services provider Rackspace on Thursday confirmed that the ransomware gang known as Play was responsible for last month’s breach. The security incident, which took place on December 2, 2022, leveraged a previously unknown security exploit to gain initial access to the Rackspace Hosted Exchange email environment. “This zero-day exploit is associated with CVE-2022-41080,” the Texas-based

The Hacker News
#vulnerability#web#windows#microsoft#rce#ssrf#zero_day#The Hacker News

Cloud Security / Cyber Threat

Cloud services provider Rackspace on Thursday confirmed that the ransomware gang known as Play was responsible for last month’s breach.

The security incident, which took place on December 2, 2022, leveraged a previously unknown security exploit to gain initial access to the Rackspace Hosted Exchange email environment.

“This zero-day exploit is associated with CVE-2022-41080,” the Texas-based company said. “Microsoft disclosed CVE-2022-41080 as a privilege escalation vulnerability and did not include notes for being part of a remote code execution chain that was exploitable.”

Rackspace’s forensic investigation found that the threat actor accessed the Personal Storage Table (.PST) of 27 customers out of nearly 30,000 customers on the Hosted Exchange email environment.

However, the company said there is no evidence the adversary viewed, misused, or distributed the customer’s emails or data from those personal storage folders. It further said it intends to retire its Hosted Exchange platform as part of a planned migration to Microsoft 365.

It’s not currently not known if Rackspace paid a ransom to the cybercriminals, but the disclosure follows a report from CrowdStrike last month that shed light on the new technique, dubbed OWASSRF, employed by the Play ransomware actors.

The mechanism targets Exchange servers that are unpatched against the ProxyNotShell vulnerabilities (CVE-2022-41040 and CVE-2022-41082) but have in place URL rewrite mitigations for the Autodiscover endpoint.

This involves an exploit chain comprising CVE-2022-41080 and CVE-2022-41082 to achieve remote code execution in a manner that bypasses the blocking rules through Outlook Web Access (OWA). The flaws were addressed by Microsoft in November 2022.

The Windows maker, in a statement shared with The Hacker News, urged customers to prioritize installing its November 2022 Exchange Server updates and that the reported method targets vulnerable systems that have not not applied the latest fixes.

Found this article interesting? Follow us on Twitter and LinkedIn to read more exclusive content we post.

Related news

Microsoft Fixes 69 Bugs, but None Are Zero-Days

The June 2023 Patch Tuesday security update included fixes for a bypass for two previously addressed issues in Microsoft Exchange and a critical elevation of privilege flaw in SharePoint Server.

Microsoft Advisories Are Getting Worse

A predictable patch cadence is nice, but the software giant can do more.

Ransomware in December 2022

Categories: Threat Intelligence Our Threat Intelligence team looks at known ransomware attacks by gang, country, and industry sector in December 2022, and looks at why LockBit had to make a public apology (Read more...) The post Ransomware in December 2022 appeared first on Malwarebytes Labs.

New Wave of Cyberattacks Targeting MS Exchange Servers

By Waqas Cybercriminals are leveraging two exploit chains (ProxyNotShell/OWASSRF) to target Microsoft Exchange servers, as warned by Bitdefender Labs. This is a post from HackRead.com Read the original post: New Wave of Cyberattacks Targeting MS Exchange Servers

Rackspace Ransomware Incident Highlights Risks of Relying on Mitigation Alone

Organizations often defer patching because of business disruption fears — but that didn't work out very well for Rackspace's Hosted Exchange service.

Rackspace Sunsets Email Service Downed in Ransomware Attack

The hosting services provider shared new details on the breach that took down its Hosted Exchange Email service.

Rackspace: Ransomware Attack Bypassed ProxyNotShell Mitigations

The hosting provider had not applied Microsoft's new patch due to publicly reported issues with the update.

Ransomware Attackers Bypass Microsoft's ProxyNotShell Mitigations With Fresh Exploit

The Play ransomware group was spotted exploiting another little-known SSRF bug to trigger RCE on affected Exchange servers.

Ransomware Hackers Using New Way to Bypass MS Exchange ProxyNotShell Mitigations

Threat actors affiliated with a ransomware strain known as Play are leveraging a never-before-seen exploit chain that bypasses blocking rules for ProxyNotShell flaws in Microsoft Exchange Server to achieve remote code execution (RCE) through Outlook Web Access (OWA). "The new exploit method bypasses URL rewrite mitigations for the Autodiscover endpoint," CrowdStrike researchers Brian Pitchford,

Rackspace confirms it suffered a ransomware attack

Categories: News Categories: Ransomware Tags: Rackspace Tags: Exchange Tags: ransomware Tags: ProxyNotShell Rackspace said a ransomware incident affected its Hosted Exchange environment and caused service disruptions. (Read more...) The post Rackspace confirms it suffered a ransomware attack appeared first on Malwarebytes Labs.

Rackspace confirms it suffered a ransomware attack

Categories: News Categories: Ransomware Tags: Rackspace Tags: Exchange Tags: ransomware Tags: ProxyNotShell Rackspace said a ransomware incident affected its Hosted Exchange environment and caused service disruptions. (Read more...) The post Rackspace confirms it suffered a ransomware attack appeared first on Malwarebytes Labs.

Microsoft Patch Tuesday November 2022: Exchange ProxyNotShell RCE, JScript9, MoTW, OpenSSL, Edge, CNG, Print Spooler

Hello everyone! This episode will be about Microsoft Patch Tuesday for November 2022, including vulnerabilities that were added between October and November Patch Tuesdays. As usual, I use my open source Vulristics project to create the report. Alternative video link (for Russia): https://vk.com/video-149273431_456239107 The most important news of this Patch Tuesday was a release of patches […]

CVE-2022-41080

Microsoft Exchange Server Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-41123.

Microsoft Issues Patches to Fix 6 Active 0-Day Windows Vulnerabilities

By Deeba Ahmed Microsoft has urged Windows Administrators to install the updates urgently so make sure you have the latest patches installed! This is a post from HackRead.com Read the original post: Microsoft Issues Patches to Fix 6 Active 0-Day Windows Vulnerabilities

Install Latest Windows Update ASAP! Patches Issued for 6 Actively Exploited Zero-Days

Microsoft's latest round of monthly security updates has been released with fixes for 68 vulnerabilities spanning its software portfolio, including patches for six actively exploited zero-days. 12 of the issues are rated Critical, two are rated High, and 55 are rated Important in severity. This also includes the weaknesses that were closed out by OpenSSL the previous week. Also separately

Patch Tuesday, November 2022 Election Edition

Let's face it: Having “2022 election” in the headline above is probably the only reason anyone might read this story today. Still, while most of us here in the United States are anxiously awaiting the results of how well we've patched our Democracy, it seems fitting that Microsoft Corp. today released gobs of security patches for its ubiquitous Windows operating systems. November's patch batch includes fixes for a whopping six zero-day security vulnerabilities that miscreants and malware are already exploiting in the wild.

Microsoft Patch Tuesday for November 2022 — Snort rules and prominent vulnerabilities

Microsoft released its monthly security update on Tuesday, disclosing 62 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical” and the rest are classified as “Important.”

Microsoft Patch Tuesday October 2022: Exchange ProxyNotShell RCE, Windows COM+ EoP, AD EoP, Azure Arc Kubernetes EoP

Hello everyone! This episode will be about Microsoft Patch Tuesday for October 2022, including vulnerabilities that were added between September and October Patch Tuesdays. As usual, I use my open source Vulristics project to create the report. All vulnerabilities: 105Urgent: 2Critical: 1High: 29Medium: 71Low: 2 Let’s take a look at the most interesting vulnerabilities: Two […]

Microsoft Patch Tuesday October 2022: Exchange ProxyNotShell RCE, Windows COM+ EoP, AD EoP, Azure Arc Kubernetes EoP

Hello everyone! This episode will be about Microsoft Patch Tuesday for October 2022, including vulnerabilities that were added between September and October Patch Tuesdays. As usual, I use my open source Vulristics project to create the report. All vulnerabilities: 105Urgent: 2Critical: 1High: 29Medium: 71Low: 2 Let’s take a look at the most interesting vulnerabilities: Two […]

Threat Source newsletter (Oct. 6, 2022) — Continuing down the Privacy Policy rabbit hole

Any time we welcome this software and hardware into our homes and on our devices, it’s worth considering what sacrifices we might be making elsewhere.

Threat Source newsletter (Oct. 6, 2022) — Continuing down the Privacy Policy rabbit hole

Any time we welcome this software and hardware into our homes and on our devices, it’s worth considering what sacrifices we might be making elsewhere.

CVE-2022-41040

Microsoft Exchange Server Elevation of Privilege Vulnerability.

Worried About the Exchange Zero-Day? Here's What to Do

While organizations wait for an official patch for the two zero-day flaws in Microsoft Exchange, they should scan their networks for signs of exploitation and apply these mitigations.

Worried About the Exchange Zero-Day? Here's What to Do

While organizations wait for an official patch for the two zero-day flaws in Microsoft Exchange, they should scan their networks for signs of exploitation and apply these mitigations.

Microsoft: Two New 0-Day Flaws in Exchange Server

Microsoft Corp. is investigating reports that attackers are exploiting two previously unknown vulnerabilities in Exchange Server, a technology many organizations rely on to send and receive email. Microsoft says it is expediting work on software patches to plug the security holes. In the meantime, it is urging a subset of Exchange customers to enable a setting that could help mitigate ongoing attacks.

Microsoft: Two New 0-Day Flaws in Exchange Server

Microsoft Corp. is investigating reports that attackers are exploiting two previously unknown vulnerabilities in Exchange Server, a technology many organizations rely on to send and receive email. Microsoft says it is expediting work on software patches to plug the security holes. In the meantime, it is urging a subset of Exchange customers to enable a setting that could help mitigate ongoing attacks.

Microsoft Confirms Pair of Blindsiding Exchange Zero-Days, No Patch Yet

The "ProxyNotShell" security vulnerabilities can be chained for remote code execution and total takeover of corporate email platforms.

Microsoft Confirms Pair of Blindsiding Exchange Zero-Days, No Patch Yet

The "ProxyNotShell" security vulnerabilities can be chained for remote code execution and total takeover of corporate email platforms.

Two new Exchange Server zero-days in the wild

Categories: Exploits and vulnerabilities Categories: News Tags: Exchange Tags: ProxyShell Tags: remote PowerShell Tags: web shell Tags: CVE-2022-41040 Tags: CVE-2022-41082 Tags: SSRF Tags: RCE Two ProxyShell-like vulnerabilities are being used to exploit Microsoft Exchange Servers (Read more...) The post Two new Exchange Server zero-days in the wild appeared first on Malwarebytes Labs.

Two new Exchange Server zero-days in the wild

Categories: Exploits and vulnerabilities Categories: News Tags: Exchange Tags: ProxyShell Tags: remote PowerShell Tags: web shell Tags: CVE-2022-41040 Tags: CVE-2022-41082 Tags: SSRF Tags: RCE Two ProxyShell-like vulnerabilities are being used to exploit Microsoft Exchange Servers (Read more...) The post Two new Exchange Server zero-days in the wild appeared first on Malwarebytes Labs.

Microsoft Confirms 2 New Exchange Zero-Day Flaws Being Used in the Wild

Microsoft officially disclosed it investigating two zero-day security vulnerabilities impacting Exchange Server 2013, 2016, and 2019 following reports of in-the-wild exploitation. "The first vulnerability, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, while the second, identified as CVE-2022-41082, allows remote code execution (RCE) when PowerShell is

Microsoft Confirms 2 New Exchange Zero-Day Flaws Being Used in the Wild

Microsoft officially disclosed it investigating two zero-day security vulnerabilities impacting Exchange Server 2013, 2016, and 2019 following reports of in-the-wild exploitation. "The first vulnerability, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, while the second, identified as CVE-2022-41082, allows remote code execution (RCE) when PowerShell is

Customer Guidance for Reported Zero-day Vulnerabilities in Microsoft Exchange Server

Summary Microsoft is investigating two reported zero-day vulnerabilities affecting Microsoft Exchange Server 2013, 2016, and 2019. The first vulnerability, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, while the second, identified as CVE-2022-41082, allows remote code execution (RCE) when PowerShell is accessible to the attacker.   At this time, Microsoft is aware of limited … Customer Guidance for Reported Zero-day Vulnerabilities in Microsoft Exchange Server Read More »

The Hacker News: Latest News

Warning: Over 2,000 Palo Alto Networks Devices Hacked in Ongoing Attack Campaign