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Vulnerability · Published May 13, 2021 · Assigned by mitre

CVE-2021-32919

High 7.5

In plain English

A high-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 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.4%top 27.5% 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. The undocumented dialback_without_dialback option in mod_dialback enables an experimental feature for server-to-server authentication. It does not correctly authenticate remote server certificates, allowing a remote server to impersonate another server (when this option is enabled).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20prosody0.11.9-r0ALPINE-CVE-2021-32919
Alpine:v3.21prosody0.11.9-r0ALPINE-CVE-2021-32919
Alpine:v3.22prosody0.11.9-r0ALPINE-CVE-2021-32919
Alpine:v3.23prosody0.11.9-r0ALPINE-CVE-2021-32919
Alpine:v3.24prosody0.11.9-r0ALPINE-CVE-2021-32919
Debian:12prosody0.11.9-1DEBIAN-CVE-2021-32919
Debian:13prosody0.11.9-1DEBIAN-CVE-2021-32919
Debian:14prosody0.11.9-1DEBIAN-CVE-2021-32919
Ubuntu:22.04:LTSprosodyno fix listedUBUNTU-CVE-2021-32919

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References