USN-3866-3: Ghostscript regression

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• ghostscript - PostScript and PDF interpreter

Details

USN-3866-2 fixed a regression in Ghostscript. The Ghostscript update
introduced a new regression that resulted in certain pages being printed
with a blue background. This update fixes the problem.

Original advisory details:

Tavis Ormandy 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 18.10

• ghostscript - 9.26~dfsg+0-0ubuntu0.18.10.7
• libgs9 - 9.26~dfsg+0-0ubuntu0.18.10.7

Ubuntu 18.04

• ghostscript - 9.26~dfsg+0-0ubuntu0.18.04.7
• libgs9 - 9.26~dfsg+0-0ubuntu0.18.04.7

Ubuntu 16.04

• ghostscript - 9.26~dfsg+0-0ubuntu0.16.04.7
• libgs9 - 9.26~dfsg+0-0ubuntu0.16.04.7

Ubuntu 14.04

• ghostscript - 9.26~dfsg+0-0ubuntu0.14.04.7
• libgs9 - 9.26~dfsg+0-0ubuntu0.14.04.7

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

References

• https://launchpad.net/bugs/1817308