USN-6731-1: YARD vulnerabilities

Releases

• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• yard - Ruby documentation tool

Details

It was discovered that YARD before 0.9.11 does not block relative paths
with an initial ../ sequence, which allows attackers to conduct
directory traversal attacks and read arbitrary files. This issue only
affected Ubuntu 16.04 LTS. (CVE-2017-17042)

It was discovered that yard before 0.9.20 is affected by a path
traversal vulnerability, allowing HTTP requests to access arbitrary
files under certain conditions. This issue only affected Ubuntu 18.04
LTS. (CVE-2019-1020001)

Aviv Keller discovered that the "frames.html" file within the Yard
Doc's generated documentation is vulnerable to Cross-Site Scripting
(XSS) attacks due to inadequate sanitization of user input within the
JavaScript segment of the "frames.erb" template file. (CVE-2024-27285)

Update instructions

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

Ubuntu 23.10

• yard - 0.9.28-2ubuntu0.1

Ubuntu 22.04

• yard - 0.9.26-1ubuntu0.1

Ubuntu 20.04

• yard - 0.9.24-1+deb11u1build0.20.04.1

Ubuntu 18.04

• yard - 0.9.12-2ubuntu0.1~esm1
  Available with Ubuntu Pro

Ubuntu 16.04

• yard - 0.8.7.6+git20160220-3ubuntu0.1~esm1
  Available with Ubuntu Pro

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

References

• CVE-2017-17042
• CVE-2019-1020001
• CVE-2024-27285