CVE-2021-33643
CRITICAL9.1EPSS 0.22%libtar - security update
Published: 8/10/2022Modified: 4/28/2026
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.
Affected packages (2)
- Debian/libtarfrom 0, < 1.2.20-8+deb12u1~deb11u1
- Debian/libtarfrom 0, < 1.2.20-8+deb12u1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |