CVE-2018-14679

Publication date 28 July 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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).

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
clamav	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Fixed 0.100.1+dfsg-1ubuntu0.14.04.3
libmspack	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	19.04 disco	Not affected
	18.10 cosmic	Not affected
	18.04 LTS bionic	Fixed 0.6-3ubuntu0.1
	16.04 LTS xenial	Fixed 0.5-1ubuntu0.16.04.2
	14.04 LTS trusty	Vulnerable

Notes

mdeslaur

clamav in xenial+ uses the system libmspack, trusty uses the embedded one.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libmspack	Upstream: 72e70a9

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3789-2
ClamAV vulnerabilities
16 October 2018

USN-3728-3
ClamAV vulnerabilities
2 August 2018

USN-3728-1
libmspack vulnerabilities
1 August 2018

USN-3728-2
ClamAV vulnerabilities
1 August 2018