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Ubuntu Security Notice USN-5075-1

Ubuntu Security Notice USN-5075-1
Posted Sep 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5075-1 - 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.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-3781
SHA-256 | 8066faf8f9bcaf984d208bae2bf6ab4841ae3f87ca73ab9faf9365b80665cadb

Ubuntu Security Notice USN-5075-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5075-1
September 10, 2021

ghostscript vulnerability
==========================================================================

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

- Ubuntu 21.04
- Ubuntu 20.04 LTS

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:

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 21.04:
ghostscript 9.53.3~dfsg-7ubuntu0.1
libgs9 9.53.3~dfsg-7ubuntu0.1

Ubuntu 20.04 LTS:
ghostscript 9.50~dfsg-5ubuntu4.3
libgs9 9.50~dfsg-5ubuntu4.3

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

References:
https://ubuntu.com/security/notices/USN-5075-1
CVE-2021-3781

Package Information:
https://launchpad.net/ubuntu/+source/ghostscript/9.53.3~dfsg-7ubuntu0.1
https://launchpad.net/ubuntu/+source/ghostscript/9.50~dfsg-5ubuntu4.3

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