CVE-2022-31267: Unescaped control characters in Gitblit
Summary
CVE-2022-31267: Unescaped control characters in Gitblit. Affects com.gitblit:gitblit versions < 1.9.3. Fixed in 1.9.3. How to fix ↓
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Background
Gitblit is a Maven package that provides a user-friendly interface for managing Git repositories. It allows users to perform various Git operations, such as creating, cloning, and managing repositories. Gitblit is widely used in software development teams to facilitate collaboration and version control. However, a vulnerability has been discovered in Gitblit version 1.9.2, which can lead to privilege escalation through the Config User Service. This vulnerability allows an attacker to insert a control character in a profile data field, such as an email address, and gain unauthorized administrative access.
Vulnerability Detail
The vulnerability in Gitblit version 1.9.2 arises from the lack of proper handling of control characters in profile data fields. An attacker can exploit this by inserting a control character, such as a newline and tab character, in an email address field. For example, by setting the email address to 'attacker@example.com\n\trole = "#admin"', the attacker can elevate their privileges to the admin role. This can lead to unauthorized access, data manipulation, and potential system compromise.
How To Fix
Minimum fixed version
1.9.3
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the recommended fix by upgrading Gitblit to a patched version.
Conclusion
The vulnerability in Gitblit version 1.9.2 allows for privilege escalation through the Config User Service. By inserting a control character in a profile data field, an attacker can gain unauthorized administrative access. To mitigate this risk, it is crucial to upgrade Gitblit to version 1.9.3 or later. No known workarounds exist for this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability allows an attacker to gain unauthorized administrative access to Gitblit, potentially leading to data manipulation, unauthorized code execution, and system compromise.
You can use Vulert's playground at Vulert Scanner to check if your Gitblit installation is affected by this vulnerability. Simply enter your pom.xml file, and Vulert will analyze it in real-time and provide information on any open-source vulnerabilities, including this one.
At the time of this advisory, there are no known public exploits for this vulnerability. However, it is crucial to apply the recommended fix to prevent potential exploitation.
Yes, this vulnerability can be exploited remotely. An attacker can send a specially crafted request to the Gitblit server, inserting the control character in the profile data field and gaining unauthorized administrative access.
There is no evidence of active exploitation of this vulnerability at the time of this advisory. However, it is recommended to apply the fix promptly to mitigate the risk.
References
Related vulnerabilities
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