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Vulnerability · Published May 13, 2021 · Assigned by mitre

CVE-2021-32921

Medium 5.9

In plain English

A medium-severity security flaw in the prosody package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)1.6%top 24.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20prosody0.11.9-r0ALPINE-CVE-2021-32921
Alpine:v3.21prosody0.11.9-r0ALPINE-CVE-2021-32921
Alpine:v3.22prosody0.11.9-r0ALPINE-CVE-2021-32921
Alpine:v3.23prosody0.11.9-r0ALPINE-CVE-2021-32921
Alpine:v3.24prosody0.11.9-r0ALPINE-CVE-2021-32921
Debian:12prosody0.11.9-1DEBIAN-CVE-2021-32921
Debian:13prosody0.11.9-1DEBIAN-CVE-2021-32921
Debian:14prosody0.11.9-1DEBIAN-CVE-2021-32921
Ubuntu:22.04:LTSprosodyno fix listedUBUNTU-CVE-2021-32921

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References