[USN-5575-1] Libxslt vulnerabilities

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-5575-1
August 22, 2022

libxslt vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Libxslt.

Software Description:
- libxslt: XSLT processing library

Details:

Nicolas Grégoire discovered that Libxslt incorrectly handled certain XML.
An attacker could possibly use this issue to expose sensitive information
or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS.
(CVE-2019-5815)

Alexey Neyman incorrectly handled certain HTML pages.
An attacker could possibly use this issue to expose sensitive information
or execute arbitrary code. (CVE-2021-30560)

Update instructions:

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

Ubuntu 22.04 LTS:
  libxslt1.1                      1.1.34-4ubuntu0.22.04.1

Ubuntu 20.04 LTS:
  libxslt1.1                      1.1.34-4ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  libxslt1.1                      1.1.29-5ubuntu0.3

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

References:
  https://ubuntu.com/security/notices/USN-5575-1
  CVE-2019-5815, CVE-2021-30560

Package Information:
  https://launchpad.net/ubuntu/+source/libxslt/1.1.34-4ubuntu0.22.04.1
  https://launchpad.net/ubuntu/+source/libxslt/1.1.34-4ubuntu0.20.04.1
  https://launchpad.net/ubuntu/+source/libxslt/1.1.29-5ubuntu0.3
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