Input validation error in Gitlab Community Edition - CVE-2018-20500
Published: May 17, 2019 / Updated: August 8, 2020
Vulnerability identifier: #VU35893
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-20500
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
Gitlab Community Edition
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
An insecure permissions issue was discovered in GitLab Community and Enterprise Edition 9.4 and later but before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1. The runner registration token in the CI/CD settings could not be reset. This was a security risk if one of the maintainers leaves the group and they know the token.
How to mitigate CVE-2018-20500
Install update from vendor's website.