Path traversal in libmspack - CVE-2018-18586
Published: October 23, 2018 / Updated: July 28, 2020
Vulnerability identifier: #VU32031
CSH Severity: Medium
CVSS v4.0: 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
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Stuart Caie
Affected software:
libmspack
libmspack
Detailed vulnerability 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.
How to mitigate CVE-2018-18586
Install update from vendor's website.