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CVE-2022-43995

Published: 2 November 2022

Sudo 1.8.0 through 1.9.12, with the crypt() password backend, contains a plugins/sudoers/auth/passwd.c array-out-of-bounds error that can result in a heap-based buffer over-read. This can be triggered by arbitrary local users with access to Sudo by entering a password of seven characters or fewer. The impact could vary depending on the system libraries, compiler, and processor architecture.

Notes

AuthorNote
mdeslaur
sudo packages in Ubuntu are compiled with PAM support, so the
vulnerable code isn't part of the binaries.

Priority

Medium

Cvss 3 Severity Score

7.1

Score breakdown

Status

Package Release Status
sudo
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not compiled)
focal Not vulnerable
(code not compiled)
jammy Not vulnerable
(code not compiled)
kinetic Not vulnerable
(code not compiled)
trusty Not vulnerable
(code not compiled)
upstream Needs triage

xenial Not vulnerable
(code not compiled)
Patches:
upstream: https://github.com/sudo-project/sudo/commit/bd209b9f16fcd1270c13db27ae3329c677d48050

Severity score breakdown

Parameter Value
Base score 7.1
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H