SUSE update for libmspack

1) Path traversal

EUVDB-ID: #VU32031

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-18586

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

** DISPUTED ** chmextract.c in the chmextract sample program, as distributed with libmspack before 0.8alpha, does not protect against absolute/relative pathnames in CHM files, leading to Directory Traversal. NOTE: the vendor disputes that this is a libmspack vulnerability, because chmextract.c was only intended as a source-code example, not a supported application.

Mitigation

Update the affected package libmspack to the latest version.

Vulnerable software versions

SUSE MicroOS: 5.0 - 5.1

SUSE Linux Enterprise Module for Basesystem: 15-SP3

libmspack-devel: before 0.6-3.14.1

libmspack0-debuginfo: before 0.6-3.14.1

libmspack0: before 0.6-3.14.1

libmspack-debugsource: before 0.6-3.14.1

CPE2.3

• cpe:2.3:o:suse:suse_microos:5.0:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_microos:5.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:a:suse:libmspack-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libmspack0-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libmspack0:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libmspack-debugsource:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20220069-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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