MGASA-2022-0335 - Updated libtar packages fix security vulnerability

Publication date: 16 Sep 2022
URL: https://advisories.mageia.org/MGASA-2022-0335.html
Type: security
Affected Mageia releases: 8
CVE: CVE-2021-33643,
     CVE-2021-33644,
     CVE-2021-33645,
     CVE-2021-33646

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. (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_longname, causing an out-of-bounds read. (CVE-2021-33644)

The th_read() function doesn't free a variable t->th_buf.gnu_longlink
after allocating memory, which may cause a memory leak. (CVE-2021-33645)

The th_read() function doesn't free a variable t->th_buf.gnu_longname
after allocating memory, which may cause a memory leak. (CVE-2021-33646)

References:
- https://bugs.mageia.org/show_bug.cgi?id=30821
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/OD4HEBSTI22FNYKOKK7W3X6ZQE6FV3XC/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33643
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33644
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33645
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33646

SRPMS:
- 8/core/libtar-1.2.20-9.1.mga8