CVE-2021-32921
5.9
MEDIUM
CVSS 3.1
EPSS 4.6%
Description
An issue was discovered in Prosody before 0.11.9. It does not use a constant-time algorithm for comparing certain secret strings when running under Lua 5.2 or later. This can potentially be used in a timing attack to reveal the contents of secret strings to an attacker.
How to fix CVE-2021-32921
To remediate CVE-2021-32921, upgrade the affected package to a fixed version below.
- Debian/prosody—upgrade to 0.11.9-1 or later
Is CVE-2021-32921 being exploited?
Low — EPSS is 4.6%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.11.9-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |