CVE catalog

CVE-2018-18584

libmspack: CVE-2018-18584

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published: Oct 17, 2018, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.66% · Oct 27, 2026

In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libmspack	sid	`0.11-2`	fixed
Debian	libmspack	forky	`0.11-2`	fixed
Debian	libmspack	trixie	`0.11-1.1`	fixed
Debian	libmspack	bookworm	`0.11-1`	fixed
Debian	cabextract	sid	`1.11-2`	fixed
Debian	cabextract	forky	`1.11-2`	fixed
Debian	cabextract	trixie	`1.11-2`	fixed
Debian	cabextract	bookworm	`1.9-3`	fixed
Ubuntu	clamav	14.04	`0.97.8+dfsg-1ubuntu4`	vulnerable
Ubuntu	clamav	14.04	`0.97.8+dfsg-1ubuntu5`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-1ubuntu4`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-1ubuntu5`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-2ubuntu2`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-4ubuntu1`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-4ubuntu1.1`	vulnerable
Ubuntu	clamav	14.04	`0.98.5+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.98.6+dfsg-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.98.7+dfsg-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.99.2+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.99.2+addedllvm-0ubuntu0.14.04.2`	vulnerable
Ubuntu	clamav	14.04	`0.99.3+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.99.4+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.2`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.3`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.4`	vulnerable
Ubuntu	clamav	14.04	`0.100.2+dfsg-1ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.100.2+dfsg-1ubuntu0.14.04.2`	fixed
Ubuntu	cabextract	pro	`1.4-4`	vulnerable
Ubuntu	cabextract	pro	`1.4-4ubuntu0.1~esm1`	fixed
Ubuntu	libmspack	pro	`0.4-1`	vulnerable
Ubuntu	libmspack	pro	`0.4-1ubuntu0.1~esm1`	fixed
Ubuntu	libmspack	16.04	`0.5-1`	vulnerable
Ubuntu	libmspack	16.04	`0.5-1ubuntu0.16.04.1`	vulnerable
Ubuntu	libmspack	16.04	`0.5-1ubuntu0.16.04.2`	vulnerable
Ubuntu	libmspack	16.04	`0.5-1ubuntu0.16.04.3`	fixed
Ubuntu	libmspack	18.04	`0.6-3`	vulnerable
Ubuntu	libmspack	18.04	`0.6-3ubuntu0.1`	vulnerable
Ubuntu	libmspack	18.04	`0.6-3ubuntu0.2`	fixed
Ubuntu	clamav	14.04	`0.97.8+dfsg-1ubuntu4`	vulnerable
Ubuntu	clamav	14.04	`0.97.8+dfsg-1ubuntu5`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-1ubuntu4`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-1ubuntu5`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-2ubuntu2`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-4ubuntu1`	vulnerable
Ubuntu	clamav	14.04	`0.98.1+dfsg-4ubuntu1.1`	vulnerable
Ubuntu	clamav	14.04	`0.98.5+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.98.6+dfsg-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.98.7+dfsg-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.99.2+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.99.2+addedllvm-0ubuntu0.14.04.2`	vulnerable
Ubuntu	clamav	14.04	`0.99.3+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.99.4+addedllvm-0ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.2`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.3`	vulnerable
Ubuntu	clamav	14.04	`0.100.1+dfsg-1ubuntu0.14.04.4`	vulnerable
Ubuntu	clamav	14.04	`0.100.2+dfsg-1ubuntu0.14.04.1`	vulnerable
Ubuntu	clamav	14.04	`0.100.2+dfsg-1ubuntu0.14.04.2`	fixed
Ubuntu	libmspack	16.04	`0.5-1`	vulnerable
Ubuntu	libmspack	16.04	`0.5-1ubuntu0.16.04.1`	vulnerable
Ubuntu	libmspack	16.04	`0.5-1ubuntu0.16.04.2`	vulnerable
Ubuntu	libmspack	16.04	`0.5-1ubuntu0.16.04.3`	fixed
Ubuntu	libmspack	18.04	`0.6-3`	vulnerable
Ubuntu	libmspack	18.04	`0.6-3ubuntu0.1`	vulnerable
Ubuntu	libmspack	18.04	`0.6-3ubuntu0.2`	fixed
Suse	libmspack	linux enterprise software development kit 11 sp4	`0.0.20060920alpha-74.11.6.1`	fixed
Suse	libmspack	linux enterprise server 11 sp4	`0.0.20060920alpha-74.11.6.1`	fixed
Suse	libmspack	linux enterprise server for sap applications 11 sp4	`0.0.20060920alpha-74.11.6.1`	fixed
Suse	libmspack	linux enterprise module for basesystem 15	`0.6-3.3.11`	fixed
Alpine	cabextract	3.10	`1.8-r0`	fixed
Alpine	cabextract	3.11	`1.8-r0`	fixed
Alpine	cabextract	3.6	`1.8-r0`	fixed
Alpine	cabextract	3.7	`1.8-r0`	fixed
Alpine	cabextract	3.8	`1.8-r0`	fixed
Alpine	cabextract	3.9	`1.8-r0`	fixed
Alpine	libmspack	3.10	`0.8_alpha-r0`	fixed
Alpine	libmspack	3.11	`0.8_alpha-r0`	fixed
Alpine	libmspack	3.6	`0.8_alpha-r0`	fixed
Alpine	libmspack	3.7	`0.8_alpha-r0`	fixed
Alpine	libmspack	3.8	`0.8_alpha-r0`	fixed
Alpine	libmspack	3.9	`0.8_alpha-r0`	fixed
Suse	libmspack	linux enterprise software development kit 12 sp5	`0.4-15.7.1`	fixed
Suse	libmspack	linux enterprise server 12 sp5	`0.4-15.7.1`	fixed
Suse	libmspack	linux enterprise server for sap applications 12 sp5	`0.4-15.7.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libmspack	source	sid	`0.8-1`	not yet assigned	Not reported	[911640]
Debian	libmspack	source	forky	`0.8-1`	not yet assigned	Not reported	[911640]
Debian	libmspack	source	trixie	`0.8-1`	not yet assigned	Not reported	[911640]
Debian	libmspack	source	bookworm	`0.8-1`	not yet assigned	Not reported	[911640]
Debian	cabextract	source	sid	`1.4-5`	not yet assigned	Not reported	Not reported
Debian	cabextract	source	forky	`1.4-5`	not yet assigned	Not reported	Not reported
Debian	cabextract	source	trixie	`1.4-5`	not yet assigned	Not reported	Not reported
Debian	cabextract	source	bookworm	`1.4-5`	not yet assigned	Not reported	Not reported
Ubuntu	clamav	deb	14.04	`0.100.2+dfsg-1ubuntu0.14.04.2`	Not reported	UBUNTU-CVE-2018-18584	Not reported
Ubuntu	cabextract	deb	pro	`1.4-4ubuntu0.1~esm1`	Not reported	UBUNTU-CVE-2018-18584	Not reported
Ubuntu	libmspack	deb	pro	`0.4-1ubuntu0.1~esm1`	Not reported	UBUNTU-CVE-2018-18584	Not reported
Ubuntu	libmspack	deb	16.04	`0.5-1ubuntu0.16.04.3`	Not reported	UBUNTU-CVE-2018-18584	Not reported
Ubuntu	libmspack	deb	18.04	`0.6-3ubuntu0.2`	Not reported	UBUNTU-CVE-2018-18584	Not reported
Ubuntu	clamav	deb	14.04	`0.100.2+dfsg-1ubuntu0.14.04.2`	Not reported	USN-3814-2	Not reported
Ubuntu	libmspack	deb	16.04	`0.5-1ubuntu0.16.04.3`	Not reported	USN-3814-1	Not reported
Ubuntu	libmspack	deb	18.04	`0.6-3ubuntu0.2`	Not reported	USN-3814-1	Not reported
Suse	libmspack	rpm	linux enterprise software development kit 11 sp4	`0.0.20060920alpha-74.11.6.1`	Not reported	SUSE-SU-2019:13992-1	Not reported
Suse	libmspack	rpm	linux enterprise server 11 sp4	`0.0.20060920alpha-74.11.6.1`	Not reported	SUSE-SU-2019:13992-1	Not reported
Suse	libmspack	rpm	linux enterprise server for sap applications 11 sp4	`0.0.20060920alpha-74.11.6.1`	Not reported	SUSE-SU-2019:13992-1	Not reported
Suse	libmspack	rpm	linux enterprise module for basesystem 15	`0.6-3.3.11`	Not reported	SUSE-SU-2019:0748-1	Not reported
Alpine	cabextract	apk	3.10	`1.8-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	cabextract	apk	3.11	`1.8-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	cabextract	apk	3.6	`1.8-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	cabextract	apk	3.7	`1.8-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	cabextract	apk	3.8	`1.8-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	cabextract	apk	3.9	`1.8-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	libmspack	apk	3.10	`0.8_alpha-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	libmspack	apk	3.11	`0.8_alpha-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	libmspack	apk	3.6	`0.8_alpha-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	libmspack	apk	3.7	`0.8_alpha-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	libmspack	apk	3.8	`0.8_alpha-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Alpine	libmspack	apk	3.9	`0.8_alpha-r0`	Not reported	ALPINE-CVE-2018-18584	Not reported
Suse	libmspack	rpm	linux enterprise software development kit 12 sp5	`0.4-15.7.1`	Not reported	SUSE-SU-2020:2711-1	Not reported
Suse	libmspack	rpm	linux enterprise server 12 sp5	`0.4-15.7.1`	Not reported	SUSE-SU-2020:2711-1	Not reported
Suse	libmspack	rpm	linux enterprise server for sap applications 12 sp5	`0.4-15.7.1`	Not reported	SUSE-SU-2020:2711-1	Not reported

[Debian bug #911640]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[cabextract]Unknown
Details (2)
- 1.9-3 · amd64 · bookworm
  Fixed · Fixed: 1.4-5
  dsa · cabextract · debian · bookworm; dsa · cabextract · debian · 12
- 1.9-3 · arm64 · bookworm
  Fixed · Fixed: 1.4-5
  dsa · cabextract · debian · bookworm; dsa · cabextract · debian · 12
[libmspack0]Unknown
Source package: [libmspack]
Details (2)
- 0.11-1 · amd64 · bookworm
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · bookworm; dsa · libmspack · debian · 12
- 0.11-1 · arm64 · bookworm
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · bookworm; dsa · libmspack · debian · 12
[libmspack-dev]Unknown
Source package: [libmspack]
Details (2)
- 0.11-1 · amd64 · bookworm
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · bookworm; dsa · libmspack · debian · 12
- 0.11-1 · arm64 · bookworm
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · bookworm; dsa · libmspack · debian · 12
[libmspack-doc]Unknown
Source package: [libmspack]
Details (2)
- 0.11-1 · all · bookworm
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · bookworm; dsa · libmspack · debian · 12
- 0.11-1 · all · bookworm
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · bookworm; dsa · libmspack · debian · 12

[Debian 13 (Trixie)]

[cabextract]Unknown
Source package: [cabextract]
Details (2)
- 1.11-2 · amd64 · trixie
  Fixed · Fixed: 1.4-5
  dsa · cabextract · debian · 13
- 1.11-2+b2 · arm64 · trixie
  Fixed · Fixed: 1.4-5
  dsa · cabextract · debian · 13
[libmspack0t64]Unknown
Source package: [libmspack]
Details (2)
- 0.11-1.1+b1 · amd64 · trixie
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · 13
- 0.11-1.1+b1 · arm64 · trixie
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · 13
[libmspack-dev]Unknown
Source package: [libmspack]
Details (2)
- 0.11-1.1+b1 · amd64 · trixie
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · 13
- 0.11-1.1+b1 · arm64 · trixie
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · 13
[libmspack-doc]Unknown
Source package: [libmspack]
Details (2)
- 0.11-1.1 · all · trixie
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · 13
- 0.11-1.1 · all · trixie
  Fixed · Fixed: 0.8-1
  dsa · libmspack · debian · 13

Observed: Oct 23, 2026, 5:35:39 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]