Path Traversal in Kyzer Libmspack
CVE-2018-18586
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
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.033 (88.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Kyzer Libmspack — versions 0.3, 0.4, 0.5
Weakness classification (CWE)
References
- github.com/kyz/libmspack/commit/7cadd489698be117c47efcadd742651594429e6d (Exploit, Vendor Advisory)
- www.openwall.com/lists/oss-security/2018/10/22/1 (Mailing List, Third Party Advisory)
- bugs.debian.org/911639 (Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201903-20 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-18586?
- CVE-2018-18586 is a medium-severity vulnerability in Kyzer Libmspack, classified under Path Traversal. CVSS score: 5.3/10. Published 2018-10-23.
- How severe is CVE-2018-18586?
- Medium severity. CVSS v3 base score is 5.3 out of 10.