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AUSCERT External Security Bulletin Redistribution
ESB-2021.3063
USN-5075-1: Ghostscript vulnerability
13 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: ghostscript
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3781
Reference: ESB-2021.3054
Original Bulletin:
https://ubuntu.com/security/notices/USN-5075-1
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USN-5075-1: Ghostscript vulnerability
10 September 2021
Ghostscript could be made to crash, access files, or run programs if it
opened a specially crafted file.
Releases
o Ubuntu 21.04
o Ubuntu 20.04 LTS
Packages
o ghostscript - PostScript and PDF interpreter
Details
It was discovered that Ghostscript incorrectly handled certain PostScript
files. If a user or automated system were tricked into processing a
specially crafted file, a remote attacker could possibly use this issue to
access arbitrary files, execute arbitrary code, or cause a denial of
service.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.04
o ghostscript - 9.53.3~dfsg-7ubuntu0.1
o libgs9 - 9.53.3~dfsg-7ubuntu0.1
Ubuntu 20.04
o ghostscript - 9.50~dfsg-5ubuntu4.3
o libgs9 - 9.50~dfsg-5ubuntu4.3
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-3781
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