CVE-2018-18585

Publication date 22 October 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has '\0' as its first or second character (such as the "/\0" name).

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
clamav	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 0.100.2+dfsg-1ubuntu0.14.04.2
libmspack	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	Fixed 0.7-1ubuntu0.1
	18.04 LTS bionic	Fixed 0.6-3ubuntu0.2
	16.04 LTS xenial	Fixed 0.5-1ubuntu0.16.04.3
	14.04 LTS trusty	Vulnerable

Notes

alexmurray

We released clamav 0.100.2+dfsg-1ubuntu0.1X.04.2 for precise/esm and trusty, but subsequently were notified the bundled libmspack is not actually vulnerable in this case, because ClamAV assigns a filename with a generated hash.

Patch details

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

Package	Patch details
libmspack	Upstream: 8759da8

Severity score breakdown

Parameter	Value
Base score	4.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-3814-1
libmspack vulnerabilities
12 November 2018

USN-3814-2
ClamAV vulnerabilities
13 November 2018

USN-3814-3
ClamAV vulnerabilities
13 November 2018