Upstream information

CVE-2021-33643 at MITRE

Description

An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having critical severity.

CVSS v3 Scores
CVSS detail CNA (CISA-ADP) National Vulnerability Database
Base Score 6.5 9.1
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact Low High
Integrity Impact None None
Availability Impact Low High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entries: 1202316 [NEW], 1202317 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Liberty Linux 8
  • libtar >= 1.2.20-17.el8
 Patchnames:
RHSA-2023:2898
openSUSE Tumbleweed
  • libtar >= 1.2.20-3.1
  • libtar-devel >= 1.2.20-3.1
  • libtar1 >= 1.2.20-3.1
 Patchnames:
openSUSE-Tumbleweed-2026-11092

SUSE Timeline for this CVE

CVE page created: Thu Aug 11 04:01:51 2022
CVE page last modified: Wed Jun 24 17:17:44 2026