SUSE update for libarchive

1) UNIX symbolic link following

EUVDB-ID: #VU61393

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-23177

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 archive, which can lean to changing ACLs of the target of the link. A local user can create a specially crafted archive, trick the victim into extracting files from it and escalate privileges on the system.

Mitigation

Update the affected package libarchive to the latest version.

Vulnerable software versions

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 3.5.1-150400.3.6.1

libarchive13-32bit: before 3.5.1-150400.3.6.1

libarchive13-debuginfo: before 3.5.1-150400.3.6.1

libarchive13: before 3.5.1-150400.3.6.1

libarchive-devel: before 3.5.1-150400.3.6.1

libarchive-debugsource: before 3.5.1-150400.3.6.1

bsdtar-debuginfo: before 3.5.1-150400.3.6.1

bsdtar: before 3.5.1-150400.3.6.1

CPE2.3

• cpe:2.3:o:suse:suse_manager_retail_branch_server:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_server:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_proxy:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_development_tools:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_desktop:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap:15.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:libarchive13-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libarchive13-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libarchive13-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libarchive13:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libarchive-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:libarchive-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:bsdtar-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:bsdtar:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223306-1/

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.