CVE-2016-8602

Publication date 12 October 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The .sethalftone5 function in psi/zht2.c in Ghostscript before 9.21 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted Postscript document that calls .sethalftone5 with an empty operand stack.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ghostscript	16.10 yakkety	Fixed 9.19~dfsg+1-0ubuntu6.2
	16.04 LTS xenial	Fixed 9.18~dfsg~0-0ubuntu2.2
	14.04 LTS trusty	Fixed 9.10~dfsg-0ubuntu10.5
	12.04 LTS precise	Fixed 9.05~dfsg-0ubuntu4.4

Patch details

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

Package	Patch details
ghostscript	Upstream: http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=f5c7555c30393e64ec1f5ab0dfae5b55b3b3fc78

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3148-1
Ghostscript vulnerabilities
2 December 2016