CVE-2021-33646 is a memory leak vulnerability in the th_read() function of libtar, affecting various Fedora and OpenEuler distributions. The flaw stems from a failure to free the t->th_buf.gnu_longname variable after memory allocation. With a CVSS score of 7.5 (High), this vulnerability can lead to a denial of service due to resource exhaustion, requiring no user interaction or privileges for a network-based attacker. There is currently no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.2.21CPE matchmatch criteria | cpe:2.3:a:feep:libtar:*:*:*:*:*:*:*:* | ||
20.03CPE matchmatch criteria | cpe:2.3:o:openatom:openeuler:20.03:sp1:*:*:lts:*:*:* | ||
20.03CPE matchmatch criteria | cpe:2.3:o:openatom:openeuler:20.03:sp3:*:*:lts:*:*:* | ||
22.03CPE matchmatch criteria | cpe:2.3:o:openatom:openeuler:22.03:*:*:*:lts:*:*:* | ||
35CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
CVE-2021-33646
Jun 11, 2024libtar: memory leak found in th_read() function
Aug 10, 2022The th_read() function doesn’t free a variable t->th_buf.gnu_longname after allocating memory which may cause a memory leak.
Aug 9, 2022