Security Bulletin
This security bulletin contains one low risk vulnerability.
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
DescriptionThe 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.
Update the affected package libarchive to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Micro: 5.3
SUSE Manager Retail Branch Server: 4.3
SUSE Manager Server: 4.3
SUSE Manager Proxy: 4.3
SUSE Linux Enterprise Module for Development Tools: 15-SP4
SUSE Linux Enterprise Module for Basesystem: 15-SP4
SUSE Linux Enterprise Desktop: 15-SP4
SUSE Linux Enterprise Server: 15-SP4
openSUSE Leap: 15.4
SUSE Linux Enterprise Server for SAP Applications: 15-SP4
SUSE Linux Enterprise High Performance Computing: 15-SP4
libarchive13-32bit-debuginfo: before 3.5.1-150400.3.9.1
libarchive13-32bit: before 3.5.1-150400.3.9.1
libarchive13-debuginfo: before 3.5.1-150400.3.9.1
libarchive13: before 3.5.1-150400.3.9.1
libarchive-devel: before 3.5.1-150400.3.9.1
libarchive-debugsource: before 3.5.1-150400.3.9.1
bsdtar-debuginfo: before 3.5.1-150400.3.9.1
bsdtar: before 3.5.1-150400.3.9.1
External linkshttp://www.suse.com/support/update/announcement/2022/suse-su-20223936-1/
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.