Bug 1960349 (CVE-2021-32921) - CVE-2021-32921 prosody: use of timing-dependent string comparison with sensitive values
Summary: CVE-2021-32921 prosody: use of timing-dependent string comparison with sensit...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-32921
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1960350 1960358
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-05-13 17:18 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-05-13 20:33 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2021-05-13 20:33:51 UTC

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Description Guilherme de Almeida Suckevicz 2021-05-13 17:18:07 UTC 
It was discovered that Prosody 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.

Reference:
https://prosody.im/security/advisory_20210512/
Comment 1 Guilherme de Almeida Suckevicz 2021-05-13 17:18:21 UTC 
Created prosody tracking bugs for this issue:

Affects: fedora-all [bug 1960350]
Comment 2 Robert Scheck 2021-05-13 17:22:20 UTC 
Well, this also affects at least EPEL 8
Comment 3 Guilherme de Almeida Suckevicz 2021-05-13 17:22:49 UTC 
Created prosody tracking bugs for this issue:

Affects: epel-all [bug 1960358]
Comment 4 Product Security DevOps Team 2021-05-13 20:33:51 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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