SUSE update for libarchive

1) UNIX symbolic link following

EUVDB-ID: #VU61394

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31566

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a symlink following issue when extracting files from the archive. A local user can create a specially crafted symbolic link to a critical file on the system, place it into an archive and modify modes, times, access control lists, and flags of a file outside of the archive.

Mitigation

Update the affected package libarchive to the latest version.

Vulnerable software versions

SUSE Enterprise Storage: 7.1

SUSE Manager Retail Branch Server: 4.2

SUSE Linux Enterprise Desktop: 15-SP3

openSUSE Leap: 15.3

SUSE Manager Server: 4.2

SUSE Manager Proxy: 4.2

SUSE Linux Enterprise Server for SAP Applications: 15-SP3

SUSE Linux Enterprise Server: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libarchive13-32bit-debuginfo: before 3.4.2-150200.4.12.1

libarchive13-32bit: before 3.4.2-150200.4.12.1

libarchive13-debuginfo: before 3.4.2-150200.4.12.1

libarchive13: before 3.4.2-150200.4.12.1

libarchive-devel: before 3.4.2-150200.4.12.1

libarchive-debugsource: before 3.4.2-150200.4.12.1

bsdtar-debuginfo: before 3.4.2-150200.4.12.1

bsdtar: before 3.4.2-150200.4.12.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223935-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.