CVE-2021-21606
Arbitrary file existence check in file fingerprints in Jenkins
4.3
MEDIUM
CVSS 3.1
EPSS 1.2%
Description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier improperly validates the format of a provided fingerprint ID when checking for its existence allowing an attacker to check for the existence of XML files with a short path.
How to fix CVE-2021-21606
To remediate CVE-2021-21606, upgrade the affected package to a fixed version below.
- Bitnami/jenkins—upgrade to 2.274.1 or later
- —upgrade to 2.263.2 or later
Is CVE-2021-21606 being exploited?
Low — EPSS is 1.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.274.1
- from 0, < 2.263.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |