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Published: 14 April 2022

A vulnerability classified as problematic was found in GhostPCL 9.55.0. This vulnerability affects the function chunk_free_object of the file gsmchunk.c. The manipulation with a malicious file leads to a memory corruption. The attack can be initiated remotely but requires user interaction. The exploit has been disclosed to the public as a POC and may be used. It is recommended to apply the patches to fix this issue.


Issue impacts GhostPCL, we currently do not build with
PCL support.
First commit fixes pcl/pcl/pcstatus.c, while this file exists
in the focal source package (only), it does not appear to get
built as debian/rules contains --without-pcl. The reproducer
in the upstream bug needs PCL support to work.
The second commit does fix a file that is built in Ubuntu
ghostscript packages, but there is no indication that it is
security relevant without the PCL support. Marking as "low"
for now until further information becomes available.



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
upstream Needs triage

jammy Not vulnerable
(see notes)
bionic Not vulnerable
(see notes)
focal Not vulnerable
(see notes)
impish Not vulnerable
(see notes)
xenial Not vulnerable
(see notes)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H