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GitLab addressed critical vulnerability CVE-2023-5009
September 20, 2023
GitLab rolled out security patches to address a critical vulnerability, tracked as CVE-2023-5009, that can be exploited to run pipelines as another user.
GitLab has released security patches to address a critical vulnerability, tracked as CVE-2023-5009 (CVSS score: 9.6), that allows an attacker to run pipelines as another user.
The issue resides in GitLab EE and affects all versions starting from 13.12 and prior to 16.2.7, all versions starting from 16.3 before 16.3.4.
“An issue has been discovered in GitLab EE affecting all versions starting from 13.12 before 16.2.7, all versions starting from 16.3 before 16.3.4. It was possible for an attacker to run pipeline jobs as an arbitrary user via scheduled security scan policies. This was a bypass of [CVE-2023-3932] showing additional impact.” reads the advisory.
An attacker can exploit this vulnerability to access sensitive information or use the elevated permissions of the impersonated user to access or modify source code, or run arbitrary code on the system.
The company addressed the vulnerability with the release of 16.3.4 for Community Edition and 16.2.7 for Enterprise Edition.
The vulnerability was reported by the security researcher Johan Carlsson (aka joaxcar) through the GitLab HackerOne bug bounty program.
Carlsson explained that it took about two years and more than 100 written reports before its submission was accepted.
To reduce the risk of exploiting the vulnerability, researchers advise users who operate a GitLab instance with a version earlier than 16.2 to refrain from enabling both the ‘Direct Transfers’ and ‘Security Policies’ features concurrently.
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