CVE-2018-14679

moderate-risk
Published 2018-07-28

An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the CHM PMGI/PMGL chunk number validity checks, which could lead to denial of service (uninitialized data dereference and application crash).

Do I need to act?

-
0.92% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (16)

Libmspack
Libmspack
Libmspack
Libmspack
Libmspack
Cabextract

Affected Vendors

Debian Redhat Canonical Cabextract Project Cabextract

References (26)

Mailing List http://www.openwall.com/lists/oss-security/2018/07/26/1
Third Party Advisory http://www.securitytracker.com/id/1041410
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3327
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3505
Issue Tracking https://bugs.debian.org/904802
Patch https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a
Mailing List https://lists.debian.org/debian-lts-announce/2018/08/msg00007.html
Third Party Advisory https://security.gentoo.org/glsa/201903-20
Third Party Advisory https://usn.ubuntu.com/3728-1/
Third Party Advisory https://usn.ubuntu.com/3728-2/
Third Party Advisory https://usn.ubuntu.com/3728-3/
Third Party Advisory https://usn.ubuntu.com/3789-2/
Third Party Advisory https://www.debian.org/security/2018/dsa-4260
Mailing List http://www.openwall.com/lists/oss-security/2018/07/26/1
Third Party Advisory http://www.securitytracker.com/id/1041410
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3327
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3505
Issue Tracking https://bugs.debian.org/904802
Patch https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a
Mailing List https://lists.debian.org/debian-lts-announce/2018/08/msg00007.html
and 6 more references
45
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 3/34 · Minimal
Exposure 18/34 · Moderate