Medium severity5.9NVD Advisory· Published May 13, 2021· Updated Jun 17, 2026
CVE-2021-32921
CVE-2021-32921
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- Prosody/Prosodydescription
Patches
Vulnerability mechanics
References
10- www.openwall.com/lists/oss-security/2021/05/13/1nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2021/05/14/2nvdMailing ListMitigationThird Party Advisory
- blog.prosody.im/prosody-0.11.9-released/nvdRelease NotesVendor Advisory
- lists.debian.org/debian-lts-announce/2021/06/msg00016.htmlnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/06/msg00018.htmlnvdThird Party Advisory
- security.gentoo.org/glsa/202105-15nvdThird Party Advisory
- www.debian.org/security/2021/dsa-4916nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/nvd
News mentions
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