[USN-5396-2] Ghostscript vulnerability

[Ian Constantin]

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Ubuntu Security Notice USN-5396-2
June 08, 2022

ghostscript vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM

Summary:

Ghostscript could be made to crash, access files, or run programs if it
opened a specially crafted file.

Software Description:
- ghostscript: PostScript and PDF interpreter

Details:

USN-5396-1 addressed a vulnerability in Ghostscript. This update
provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory 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 16.04 ESM:
   ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.14+esm3
   libgs9                             9.26~dfsg+0-0ubuntu0.16.04.14+esm3

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

References:
   https://ubuntu.com/security/notices/USN-5396-2
   https://ubuntu.com/security/notices/USN-5396-1
   CVE-2019-25059
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