[USN-7447-1] Yelp vulnerability

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-7447-1
April 23, 2025

yelp, yelp-xsl vulnerability
==========================================================================

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

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Yelp could be made to expose sensitive information over the network.

Software Description:
- yelp: Help browser for GNOME
- yelp-xsl: XSL stylesheets for the yelp help browser

Details:

It was discovered that Yelp incorrectly handled paths in ghelp URLs. A
remote attacker could use this issue to trick users into opening malicious
downloaded help files and exfiltrate sensitive information.

Update instructions:

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

Ubuntu 25.04
   yelp                            42.2-2ubuntu0.1
   yelp-xsl                        42.1-3ubuntu0.1

Ubuntu 24.10
   yelp                            42.2-1ubuntu0.24.10.1
   yelp-xsl                        42.1-2ubuntu0.24.10.1

Ubuntu 24.04 LTS
   yelp                            42.2-1ubuntu0.24.04.1
   yelp-xsl                        42.1-2ubuntu0.24.04.1

Ubuntu 22.04 LTS
   yelp                            42.1-1ubuntu0.1
   yelp-xsl                        42.0-1ubuntu0.1

Ubuntu 20.04 LTS
   yelp                            3.36.2-0ubuntu1.1
   yelp-xsl                        3.36.0-1ubuntu0.1

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

References:
   https://ubuntu.com/security/notices/USN-7447-1
   CVE-2025-3155

Package Information:
   https://launchpad.net/ubuntu/+source/yelp/42.2-2ubuntu0.1
   https://launchpad.net/ubuntu/+source/yelp-xsl/42.1-3ubuntu0.1
   https://launchpad.net/ubuntu/+source/yelp/42.2-1ubuntu0.24.10.1
   https://launchpad.net/ubuntu/+source/yelp-xsl/42.1-2ubuntu0.24.10.1
   https://launchpad.net/ubuntu/+source/yelp/42.2-1ubuntu0.24.04.1
   https://launchpad.net/ubuntu/+source/yelp-xsl/42.1-2ubuntu0.24.04.1
   https://launchpad.net/ubuntu/+source/yelp/42.1-1ubuntu0.1
   https://launchpad.net/ubuntu/+source/yelp-xsl/42.0-1ubuntu0.1
   https://launchpad.net/ubuntu/+source/yelp/3.36.2-0ubuntu1.1
   https://launchpad.net/ubuntu/+source/yelp-xsl/3.36.0-1ubuntu0.1

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