Vulnerability CVE-2018-18586


Published: 2018-10-22   Modified: 2018-10-23

Description:
** 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.

Type:

CWE-22

(Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))

Vendor: Kyzer
Product: Libmspack 
Version:
0.7
0.6
0.5
0.4
0.3

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None

 References:
https://bugs.debian.org/911639
https://github.com/kyz/libmspack/commit/7cadd489698be117c47efcadd742651594429e6d
https://security.gentoo.org/glsa/201903-20
https://www.openwall.com/lists/oss-security/2018/10/22/1

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