CVE-2021-33640

CVSS 6.2 MEDIUMEPSS 0.6%CWE-416

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.2EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

19 Dec 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free).

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

openEuler · openEuler 20.03 LTS SP1 openEuler · openEuler 20.03 LTS SP3 openEuler · openEuler 22.03 LTS

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4S4PJRCJLEAWN2EKXGLSOBTL7O57V7NC/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WX5YE66CT7Y5C2HTHXSFDKQWYWYWJ2T/https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2021-33640&packageName=libtar