HIGH
CVE-2018-14682
CWE-193Published: July 28, 2018· Updated: Jun 17, 2026
8.8
CVSS v3.1
Official Description
An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the TOLOWER() macro for CHM decompression.
Technical Analysis
CVE-2018-14682 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Vendors & Products
cabextract1 product(s)
libmspack
cabextract_project1 product(s)
cabextract
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Red Hat4 product(s)
ansible towerenterprise linux desktopenterprise linux serverenterprise linux workstation
Source: NVD CPE · 16 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttps://usn.ubuntu.com/3728-1/
ADVISORYhttps://usn.ubuntu.com/3728-2/
ADVISORYhttps://usn.ubuntu.com/3728-3/
ADVISORYhttps://usn.ubuntu.com/3789-2/
ADVISORYhttps://usn.ubuntu.com/3728-1/
ADVISORYhttps://usn.ubuntu.com/3728-2/
ADVISORYhttps://usn.ubuntu.com/3728-3/
ADVISORYhttps://usn.ubuntu.com/3789-2/
All References (26)
→
http://www.openwall.com/lists/oss-security/2018/07/26/1Mailing List · Third Party Advisory
→
http://www.securitytracker.com/id/1041410Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2018:3327Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2018:3505Third Party Advisory
→
https://bugs.debian.org/904800Issue Tracking · Mailing List · Patch · Third Party Advisory
→
https://github.com/kyz/libmspack/commit/4fd9ccaa54e1aebde1e4b95fb0163b699fd7bcc8Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/08/msg00007.htmlMailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/201903-20Third 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-4260Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2018/07/26/1Mailing List · Third Party Advisory
→
http://www.securitytracker.com/id/1041410Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2018-14682
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-193
CISA KEVNo
Affected5 vendor(s)
PublishedJul 28, 2018
Related CVEs (CWE-193)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-14682 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.