A vulnerability was found in Mozilla Thunderbird up to 128.1. It has been rated as critical. This issue affects an unknown code of the component OTR Chat Session Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 128.2.

The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2024-8394 since 09/03/2024. 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. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/02/2024).

The vulnerability scanner Nessus provides a plugin with the ID 207923 (Rocky Linux 9 : thunderbird (RLSA-2024:6683)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 128.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (207923). The entries VDB-278978, VDB-278984, VDB-278986 and VDB-278989 are related to this item.

Productinfo

Type

• Mail Client Software

Vendor

• Mozilla

Name

• Thunderbird

Version

• 128.0
• 128.1

License

• open-source

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• 🔒

CPE 2.2info

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