Mozilla Thunderbird Markup injection

Summaryinfo

A vulnerability has been found in Mozilla Thunderbird and classified as problematic. Affected is an unknown function of the component Markup Handler. The manipulation leads to injection. This vulnerability is uniquely identified as CVE-2024-2610. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Thunderbird (the affected version unknown). This issue affects an unknown part of the component Markup Handler. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality. The summary by CVE is:

Using a markup injection an attacker could have stolen nonce values. This could have been used to bypass strict content security policies. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

It is possible to read the advisory at mozilla.org. The identification of this vulnerability is CVE-2024-2610 since 03/18/2024. 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. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/18/2025). The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 239942 (TencentOS Server 2: firefox (TSSA-2024:0095)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

The vulnerability is also documented in the vulnerability database at Tenable (239942). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Mail Client Software

Vendor

• Mozilla

Name

• Thunderbird

License

• open-source

Website

• Vendor: https://www.mozilla.org/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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