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Atlassian Rolls Out Security Patch for Critical Confluence Vulnerability
Atlassian has rolled out fixes to remediate a critical security vulnerability pertaining to the use of hard-coded credentials affecting the Questions For Confluence app for Confluence Server and Confluence Data Center. The flaw, tracked as CVE-2022-26138, arises when the app in question is enabled on either of two services, causing it to create a Confluence user account with the username "
Atlassian has rolled out fixes to remediate a critical security vulnerability pertaining to the use of hard-coded credentials affecting the Questions For Confluence app for Confluence Server and Confluence Data Center.
The flaw, tracked as CVE-2022-26138, arises when the app in question is enabled on either of two services, causing it to create a Confluence user account with the username “disabledsystemuser.”
While this account, Atlassian says, is to help administrators migrate data from the app to Confluence Cloud, it’s also created with a hard-coded password, effectively allowing viewing and editing all non-restricted pages within Confluence by default.
“A remote, unauthenticated attacker with knowledge of the hard-coded password could exploit this to log into Confluence and access any pages the confluence-users group has access to,” the company said in an advisory, adding that “the hard-coded password is trivial to obtain after downloading and reviewing affected versions of the app.”
Questions for Confluence versions 2.7.34, 2.7.35, and 3.0.2 are impacted by the flaw, with fixes available in versions 2.7.38 and 3.0.5. Alternatively, users can disable or delete the disabledsystemuser account.
While Atlassian has pointed out that there’s no evidence of active exploitation of the flaw, users can look for indicators of compromise by checking the last authentication time for the account. “If the last authentication time for disabledsystemuser is null, that means the account exists but no one has ever logged into it,” it said.
Separately, the Australian software company also moved to patch a pair of critical flaws, which it calls servlet filter dispatcher vulnerabilities, impacting multiple products -
- Bamboo Server and Data Center
- Bitbucket Server and Data Center
- Confluence Server and Data Center
- Crowd Server and Data Center
- Fisheye and Crucible
- Jira Server and Data Center, and
- Jira Service Management Server and Data Center
Successful exploitation of the bugs, tracked as CVE-2022-26136 and CVE-2022-26137, could enable an unauthenticated, remote attacker to bypass authentication used by third-party apps, execute arbitrary JavaScript code, and circumvent the cross-origin resource sharing (CORS) browser mechanism by sending a specially crafted HTTP request.
“Atlassian has released updates that fix the root cause of this vulnerability, but has not exhaustively enumerated all potential consequences of this vulnerability,” the company cautioned in its advisory regarding CVE-2022-26137.
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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added the recently disclosed Atlassian security flaw to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. The vulnerability, tracked as CVE-2022-26138, concerns the use of hard-coded credentials when the Questions For Confluence app is enabled in Confluence Server and Data Center
A week after Atlassian rolled out patches to contain a critical flaw in its Questions For Confluence app for Confluence Server and Confluence Data Center, the shortcoming has now come under active exploitation in the wild. The bug in question is CVE-2022-26138, which concerns the use of a hard-coded password in the app that could be exploited by a remote, unauthenticated attacker to gain
Attackers almost immediately leapt on a just-disclosed bug, CVE-2022-26138, affecting Atlassian Confluence, which allows remote, unauthenticated actors unfettered access to Confluence data.
A hardcoded password associated with the Questions for Confluence app has been publicly released, which will likely lead to exploit attempts that give cyberattackers access to all Confluence content.
Jira, Bamboo, Bitbucket, Confluence, Fisheye/Crucible, and Questions for Confluence affected
The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group with the username disabledsystemuser and a hardcoded password. A remote, unauthenticated attacker with knowledge of the hardcoded password could exploit this to log into Confluence and access all content accessible to users in the confluence-users group. This user account is created when installing versions 2.7.34, 2.7.35, and 3.0.2 of the app.
A vulnerability in multiple Atlassian products allows a remote, unauthenticated attacker to cause additional Servlet Filters to be invoked when the application processes requests or responses. Atlassian has confirmed and fixed the only known security issue associated with this vulnerability: Cross-origin resource sharing (CORS) bypass. Sending a specially crafted HTTP request can invoke the Servlet Filter used to respond to CORS requests, resulting in a CORS bypass. An attacker that can trick a user into requesting a malicious URL can access the vulnerable application with the victim’s permissions. Atlassian Bamboo versions are affected before 8.0.9, from 8.1.0 before 8.1.8, and from 8.2.0 before 8.2.4. Atlassian Bitbucket versions are affected before 7.6.16, from 7.7.0 before 7.17.8, from 7.18.0 before 7.19.5, from 7.20.0 before 7.20.2, from 7.21.0 before 7.21.2, and versions 8.0.0 and 8.1.0. Atlassian Confluence versions are affected before 7.4.17, from 7.5.0 before 7.13.7, from 7.14...
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