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Vulnerability · Published Mar 16, 2022 · Assigned by redhat

CVE-2020-25721

High 8.8

In plain English

A high-severity improper input validation in samba. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)8.8High
Exploit odds (30 days)2.2%top 17.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20samba4.15.2-r0ALPINE-CVE-2020-25721
Alpine:v3.21samba4.15.2-r0ALPINE-CVE-2020-25721
Alpine:v3.22samba4.15.2-r0ALPINE-CVE-2020-25721
Alpine:v3.23samba4.15.2-r0ALPINE-CVE-2020-25721
Alpine:v3.24samba4.15.2-r0ALPINE-CVE-2020-25721
Debian:12samba2:4.13.14+dfsg-1DEBIAN-CVE-2020-25721
Debian:13samba2:4.13.14+dfsg-1DEBIAN-CVE-2020-25721
Debian:14samba2:4.13.14+dfsg-1DEBIAN-CVE-2020-25721
Ubuntu:22.04:LTSsamba2:4.13.14+dfsg-0ubuntu1UBUNTU-CVE-2020-25721

Affected products (as reported)

VendorProductVersions
n/a samba Affected - All versions since Samba 4.0.0, Fixed-In - v4.15.2, v4.14.10 and v4.13.14

Weakness: CWE-20

References