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Ubuntu 20.04 LTS: USN-4469-1 Critical: Ghostscript Denial of Service

ubuntu
Calendar Grey August 24, 2020
Dist Ubuntu Esm H88
On December 2, 2021, OpenSSL on Debian addressed multiple security flaws to reduce risks of exploitation and service interruptions.
Several security issues were fixed in Ghostscript.

Summary

Several security issues were fixed in Ghostscript.

Software Description:

- ghostscript: PostScript and PDF interpreter

Details:

It was discovered that Ghostscript incorrectly handled certain document

files. If a user or automated system were tricked into processing a

specially crafted file, a remote attacker could use this issue to cause

Ghostscript to crash, resulting in a denial of service, or possibly

execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service remote code execution Ubuntu Ghostscript August 2020

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
  ghostscript                     9.50~dfsg-5ubuntu4.2
  libgs9                          9.50~dfsg-5ubuntu4.2

Ubuntu 18.04 LTS:
  ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.13
  libgs9                          9.26~dfsg+0-0ubuntu0.18.04.13

Ubuntu 16.04 LTS:
  ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.13
  libgs9                          9.26~dfsg+0-0ubuntu0.16.04.13

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4469-1

CVE-2020-16287, CVE-2020-16288, CVE-2020-16289, CVE-2020-16290,

CVE-2020-16291, CVE-2020-16292, CVE-2020-16293, CVE-2020-16294,

CVE-2020-16295, CVE-2020-16296, CVE-2020-16297, CVE-2020-16298,

CVE-2020-16299, CVE-2020-16300, CVE-2020-16301, CVE-2020-16302,

CVE-2020-16303, CVE-2020-16304, CVE-2020-16305, CVE-2020-16306,

CVE-2020-16307, CVE-2020-16308, CVE-2020-16309, CVE-2020-16310,

CVE-2020-17538

Severity
critical
Lowest
Low
Medium
High
Critical

August 24, 2020

Topics%20covered

Topics Covered

security advisory denial of service remote code execution Ubuntu Ghostscript August 2020

Package Information

https://launchpad.net/ubuntu/+source/ghostscript/9.50~dfsg-5ubuntu4.2
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.04.13
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.16.04.13

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