SARA / Free Tools / CVE / CVE-2020-13333

CVE-2020-13333 — A potential DOS vulnerability was discovered in GitLab versions 13

A potential DOS vulnerability was discovered in GitLab versions 13.1, 13.2 and 13.3. The api to update an asset as a link from a release had a regex check which caused exponential number of backtracks for certain user supplied values resulting in high CPU usage.

CVSS
4.3 MEDIUM
EPSS
0.15% (top 64.60%)
CWE
—
Published
2020-10-06T18:30:03.000Z
Last modified
2024-08-04T12:18:17.569Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

01What is this vulnerability?

A potential DOS vulnerability was discovered in GitLab versions 13.1, 13.2 and 13.3. The api to update an asset as a link from a release had a regex check which caused exponential number of backtracks for certain user supplied values resulting in high CPU usage.

02Affected products

VendorProductVersions
GitLabGitLab>=13.1, <13.2.10, >=13.3.0, <13.3.7, >=13.4.0, <13.4.2

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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