VulnerabilityModified
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.
MEDIUM 5.3EPSS 3.28%
Does this matter?
Lower severity and a low EPSS score (3.28%). Track it; it rarely justifies an emergency change on its own.
Description
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
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 3.28% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- kyzer/libmspack
- Source
- cve@mitre.org
References
- https://bugs.debian.org/911639Mailing List, Third Party Advisory
- https://github.com/kyz/libmspack/commit/7cadd489698be117c47efcadd742651594429e6dExploit, Vendor Advisory
- https://security.gentoo.org/glsa/201903-20Third Party Advisory
- https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing List, Third Party Advisory
- https://bugs.debian.org/911639Mailing List, Third Party Advisory
- https://github.com/kyz/libmspack/commit/7cadd489698be117c47efcadd742651594429e6dExploit, Vendor Advisory
- https://security.gentoo.org/glsa/201903-20Third Party Advisory
- https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.