SB2022052610 - Path traversal in dpkg

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Main Vulnerability Database SB2022052610

SB2022052610 - Path traversal in dpkg

Published: May 26, 2022

Security Bulletin ID SB2022052610
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Path traversal (CVE-ID: CVE-2022-1664)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error in Dpkg::Source::Archive in dpkg when extracting untrusted source packages in the v2 and v3 source package formats that include a debian.tar. A remote attacker can create a specially crafted package with symbolic links that point to files outside the source tree root directory and overwrite arbitrary files on the system.


Remediation

Install update from vendor's website.

References