DEBIAN-CVE-2021-33643

See a problem?
Please try reporting it to the source first.

Source

https://security-tracker.debian.org/tracker/CVE-2021-33643

Import Source

https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-33643.json

JSON Data

https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-33643

Upstream

CVE-2021-33643

Published

2022-08-10T20:15:20.450Z

Modified

2025-11-17T04:22:54.749923Z

Severity

9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator

Summary

[none]

Details

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.

References

https://security-tracker.debian.org/tracker/CVE-2021-33643

Affected packages

Debian:11 / libtar

Package

Name: libtar
Purl: pkg:deb/debian/libtar?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.20-8+deb12u1~deb11u1

Affected versions

1.*

1.2.20-8

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-33643.json"

Debian:12 / libtar