CVE-2023-29538 Information disclosure in Firefox

What is CVE-2023-29538?

CVE-2023-29538 is a medium-severity vulnerability in Mozilla Firefox, published on 2 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's machine. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

Weakness: CWE-668

Which versions are affected by CVE-2023-29538?

It affects 3 products.

Products include Mozilla Firefox, Mozilla Firefox Mobile, Mozilla Focus.

How do I fix CVE-2023-29538?

Upgrade to a fixed version.

Is CVE-2023-29538 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-29538 exists.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5mrh-6gmv-vc85, UBUNTU-CVE-2023-29538.