Mozilla Firefox up to 132 sec_pkcs7_decoder_start_decrypt memory corruption

Summaryinfo

A vulnerability categorized as critical has been discovered in Mozilla Firefox up to 132. This vulnerability affects the function sec_pkcs7_decoder_start_decrypt. Executing a manipulation can lead to memory corruption. This vulnerability appears as CVE-2024-11704. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Mozilla Firefox up to 132 and classified as critical. This vulnerability affects the function sec_pkcs7_decoder_start_decrypt. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path. Under specific conditions, the same symmetric key could have been freed twice, potentially leading to memory corruption. This vulnerability affects Firefox < 133 and Thunderbird < 133.

The advisory is shared for download at bugzilla.mozilla.org. This vulnerability was named CVE-2024-11704 since 11/25/2024. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/08/2025).

The vulnerability scanner Nessus provides a plugin with the ID 211873 (Mozilla Firefox < 133.0), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 133 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211873). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 132

License

• open-source

Website

• Vendor: https://www.mozilla.org/
• Product: https://www.mozilla.org/en-US/firefox/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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