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List:       ubuntu-security-announce
Subject:    [USN-5224-2] Ghostscript vulnerabilities
From:       "Leonidas S. Barbosa" <leo.barbosa () canonical ! com>
Date:       2022-01-13 14:12:22
Message-ID: 20220113141222.GA1916089 () d4rkl41n
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==========================================================================
Ubuntu Security Notice USN-5224-2
January 13, 2022

ghostscript vulnerabilities
==========================================================================

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

- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in Ghostscript.

Software Description:
- ghostscript: PostScript and PDF interpreter

Details:

USN-5224-1 fixed several vulnerabilities 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
 cause Ghostscript to crash, resulting in a denial of service, or possibly
 execute arbitrary code.

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+esm1
  libgs9                          9.26~dfsg+0-0ubuntu0.16.04.14+esm1

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

References:
  https://ubuntu.com/security/notices/USN-5224-2
  https://ubuntu.com/security/notices/USN-5224-1
  CVE-2021-45944, CVE-2021-45949

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