Mozilla Thunderbird up to 132 sec_pkcs7_decoder_start_decrypt memory corruption

Summaryinfo

A vulnerability identified as critical has been detected in Mozilla Thunderbird up to 132. This issue affects the function sec_pkcs7_decoder_start_decrypt. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2024-11704. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 132 and classified as critical. This issue affects the function sec_pkcs7_decoder_start_decrypt. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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 at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2024-11704 since 11/25/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (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). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Mail Client Software

Vendor

• Mozilla

Name

• Thunderbird

Version

• 132

License

• open-source

Website

• Vendor: https://www.mozilla.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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