VDB
CVE-2021-33643
CVE-2021-33643
PUBLISHED
CVSS 9.100000381469727 CRITICAL
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.
EPSS 1.88% · 79.3th percentile
Risk Scores
CVSS 3.1
9.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS Score
1.88%
79.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:18.04:LTS | libtar | 1.2.20-7, 0 |
| Ubuntu:20.04:LTS | libtar | 0, 1.2.20-7, 1.2.20-8 |
| Ubuntu:22.04:LTS | libtar | 1.2.20-8, 0 |
| Ubuntu:24.04:LTS | libtar | 1.2.20-8.1build1, 1.2.20-8, 1.2.20-8.1 |
| Ubuntu:Pro:16.04:LTS | libtar | 0, 1.2.20-4 |
Timeline
- Aug 9, 2022 CVE Published
- Aug 10, 2022 EPSS Score
- Sep 26, 2022 EPSS Score
- Nov 12, 2022 EPSS Score
- Dec 28, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
- Apr 1, 2023 EPSS Score
- May 18, 2023 EPSS Score
- Jul 4, 2023 EPSS Score
- Aug 20, 2023 EPSS Score
- Oct 5, 2023 EPSS Score
- Nov 21, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-33643 advisory
- https://ubuntu.com/security/notices/USN-7398-1 advisory
- https://www.cve.org/CVERecord?id=CVE-2021-33643 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2121289 third-party-advisory