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Ubuntu 22.04 LTS USN-5643-1 Critical Ghostscript Denial Of Service

ubuntu
Calendar Grey September 27, 2022
Dist Ubuntu Esm H88
Critical Ghostscript vulnerabilities fixed in various Ubuntu versions. Safeguard against service denial and execution threats.
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 PDF files.

If a user or automated system were tricked into opening a specially crafted

PDF file, a remote attacker could use this issue to cause GhostScript to

crash, resulting in a denial of service, or possibly execute arbitrary

code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

(CVE-2020-27792)

It was discovered that GhostScript incorrectly handled certain PDF files.

If a user or automated system were tricked into opening a specially crafted

PDF file, a remote attacker could use this issue to cause GhostScript to

crash, resulting in a denial of service, or possibly execute arbitrary

code. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-2085)

Topics%20covered

Topics Covered

security advisory denial of service ghostscript remote execution ubuntu security issues

Update Instructions

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

Ubuntu 22.04 LTS:
  ghostscript                     9.55.0~dfsg1-0ubuntu5.1

Ubuntu 20.04 LTS:
  ghostscript                     9.50~dfsg-5ubuntu4.6

Ubuntu 18.04 LTS:
  ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.17

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

References

https://ubuntu.com/security/notices/USN-5643-1

CVE-2020-27792, CVE-2022-2085

Severity
critical
Lowest
Low
Medium
High
Critical

September 27, 2022

Topics%20covered

Topics Covered

security advisory denial of service ghostscript remote execution ubuntu security issues

Package Information

https://launchpad.net/ubuntu/+source/ghostscript/9.55.0~dfsg1-0ubuntu5.1
https://launchpad.net/ubuntu/+source/ghostscript/9.50~dfsg-5ubuntu4.6
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.04.17

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