Out-of-bounds Read Affecting atftp package, versions <0.7.git20120829-3.1~0.18.04.1+esm1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.36% (69th percentile)

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  • Snyk IDSNYK-UBUNTU1804-ATFTP-2395559
  • published22 Mar 2026
  • disclosed4 Feb 2022

Introduced: 4 Feb 2022

CVE-2021-46671  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 atftp to version 0.7.git20120829-3.1~0.18.04.1+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream atftp package and not the atftp package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

options.c in atftp before 0.7.5 reads past the end of an array, and consequently discloses server-side /etc/group data to a remote client.

CVSS Base Scores

version 3.1