CVE-2018-14679 — Off-by-one Error in Libmspack

CWE-193 — Off-by-one Error16 documents8 sources
Severity
6.5MEDIUMNVD
EPSS
0.9%
top 24.08%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Libmspack Project LibmspackClamavCabextract Project Cabextract+7 more
Timeline
PublishedJul 28
Latest updateOct 1

Description

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).

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages9 packages

▶Debianlibmspack_project/libmspack< 0.7-1+3
▶Ubuntulibmspack_project/libmspack< 0.5-1ubuntu0.16.04.2+1
▶NVDcabextract/libmspack5 versions+4
▶Ubuntuclamav/clamav< 0.100.1+dfsg-1ubuntu0.14.04.3

Also affects: Debian Linux 8.0, 9.0, Ubuntu Linux 12.04, 14.04, 16.04, 18.04

Patches

Patch: bugs.debian.org ↗Patch: github.com ↗Patch: bugs.debian.org ↗

🔴Vulnerability Details

5
GHSA
GHSA-jrp9-m5qh-vr83: An issue was discovered in mspack/chmd↗2022-05-13
▶
OSV
clamav vulnerabilities↗2018-08-01
▶
OSV
libmspack vulnerabilities↗2018-08-01
▶
OSV
CVE-2018-14679: An issue was discovered in mspack/chmd↗2018-07-28
▶
CVEList
CVE-2018-14679: An issue was discovered in mspack/chmd↗2018-07-28
▶

📋Vendor Advisories

7
Ubuntu
libmspack vulnerabilities↗2025-10-01
▶
Ubuntu
ClamAV vulnerabilities↗2018-10-16
▶
Ubuntu
ClamAV vulnerabilities↗2018-08-02
▶
Ubuntu
ClamAV vulnerabilities↗2018-08-01
▶
Ubuntu
libmspack vulnerabilities↗2018-08-01
▶

💬Community

3
Bugzilla
CVE-2018-14679 libmspack: off-by-one error in the CHM PMGI/PMGL chunk number validity checks [fedora-all]↗2018-08-01
▶
Bugzilla
CVE-2018-14679 libmspack: off-by-one error in the CHM PMGI/PMGL chunk number validity checks [epel-all]↗2018-08-01
▶
Bugzilla
CVE-2018-14679 libmspack: off-by-one error in the CHM PMGI/PMGL chunk number validity checks↗2018-08-01
▶
CVE-2018-14679 — Off-by-one Error in Libmspack | cvebase