Out-of-bounds Read Affecting samba package, versions <2:4.13.13+dfsg-1


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.89% (84th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-SAMBA-1088962
  • published25 Mar 2021
  • disclosed12 May 2021

Introduced: 25 Mar 2021

CVE-2020-27840  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Debian:unstable samba to version 2:4.13.13+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1