vulnerability
Ubuntu: (CVE-2021-32921): prosody vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | May 13, 2021 | Jun 26, 2025 | Aug 18, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
May 13, 2021
Added
Jun 26, 2025
Modified
Aug 18, 2025
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.
Solution
no-fix-ubuntu-package
References
- CVE-2021-32921
- https://attackerkb.com/topics/CVE-2021-32921
- CWE-362
- URL-https://blog.prosody.im/prosody-0.11.9-released/
- URL-https://hg.prosody.im/trunk/rev/13b84682518e
- URL-https://hg.prosody.im/trunk/rev/6f56170ea986
- URL-https://hg.prosody.im/trunk/rev/c98aebe601f9
- URL-https://prosody.im/security/advisory_20210512.txt
- URL-https://www.cve.org/CVERecord?id=CVE-2021-32921
- URL-https://www.openwall.com/lists/oss-security/2021/05/13/1
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