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Ubuntu 19.04 LTS Security Advisory 4111-1: Ghostscript File Access Risk

ubuntu
Calendar Grey August 28, 2019
Dist Ubuntu Esm H88
Recent Ghostscript flaws found in Ubuntu may lead to unauthorized file access. Discover the security patches available and the process to update your systems.
Ghostscript could be made to access arbitrary files if it opened a specially crafted file.

Summary

Ghostscript could be made to access arbitrary files if it opened a

specially crafted file.

Software Description:

- ghostscript: PostScript and PDF interpreter

Details:

Hiroki Matsukuma discovered that the PDF interpreter in Ghostscript

did not properly restrict privileged calls when ‘-dSAFER’

restrictions were in effect. 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.

(CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817)

Topics%20covered

Topics Covered

security advisory security issue remote access ghostscript Ubuntu file access arbitrary files

Update Instructions

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

Ubuntu 19.04:
  ghostscript                     9.26~dfsg+0-0ubuntu7.3
  libgs9                          9.26~dfsg+0-0ubuntu7.3

Ubuntu 18.04 LTS:
  ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.11
  libgs9                          9.26~dfsg+0-0ubuntu0.18.04.11

Ubuntu 16.04 LTS:
  ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.11
  libgs9                          9.26~dfsg+0-0ubuntu0.16.04.11

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

References

CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817

Severity
important
Lowest
Low
Medium
High
Critical

August 29, 2019

Topics%20covered

Topics Covered

security advisory security issue remote access ghostscript Ubuntu file access arbitrary files

Package Information

https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu7.3
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.04.11
https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.16.04.11

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