CVE-2018-18586 — MEDIUM (5.3)

Vulnerability 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 Score

5.3

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Kyzer	Libmspack	0.3

Related Weaknesses (CWE)

CWE-22

References

https://bugs.debian.org/911639Mailing ListThird Party Advisory
https://github.com/kyz/libmspack/commit/7cadd489698be117c47efcadd742651594429e6dExploitVendor Advisory
https://security.gentoo.org/glsa/201903-20Third Party Advisory
https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing ListThird Party Advisory
https://bugs.debian.org/911639Mailing ListThird Party Advisory
https://github.com/kyz/libmspack/commit/7cadd489698be117c47efcadd742651594429e6dExploitVendor Advisory
https://security.gentoo.org/glsa/201903-20Third Party Advisory
https://www.openwall.com/lists/oss-security/2018/10/22/1Mailing ListThird Party Advisory

FAQ

What is CVE-2018-18586?

CVE-2018-18586 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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: t...

How severe is CVE-2018-18586?

CVE-2018-18586 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-18586?

Check the references section above for vendor advisories and patch information. Affected products include: Kyzer Libmspack.