CRITICAL 9.1 Microsoft

CVE-2021-33643

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.

Microsoft Security Update 2022-Aug: 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 Products

References

Published: 2022-08-09 · Source: Microsoft · Feed updated: 2026-09-03
This critical severity vulnerability with a CVSS score of 9.1 was published on 2022-08-09 via Microsoft. Affected: cm1 libtar 1.2.20-10 on CBL Mariner 1.0, cbl2 libtar 1.2.20-10 on CBL Mariner 2.0, azl3 libtar 1.2.20-11 on Azure Linux 3.0.

Risk Timeline

CVE Disclosed2022-08-09 · 1485 days ago

Remediation Resources

Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33643
NVD / MITRE
nvd.nist.gov/vuln/detail/CVE-2021-33643

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