Mozilla Firefox/Firefox ESR/Thunderbird on ARM64 ValueTags Object memory corruption

Summaryinfo

A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird on ARM64. It has been classified as critical. This issue affects some unknown processing of the component ValueTags. The manipulation as part of Object leads to memory corruption. This vulnerability is traded as CVE-2020-12417. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox, Firefox ESR and Thunderbird on ARM64 (Web Browser) (unknown version). This issue affects an unknown code block of the component ValueTags. The manipulation as part of a Object 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:

Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash. *Note: this issue only affects Firefox on ARM64 platforms.* This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

The weakness was shared 07/09/2020 as Bug 1640737 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2020-12417 since 04/28/2020. 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 10/14/2024).

The vulnerability scanner Nessus provides a plugin with the ID 208600 (CentOS 7 : thunderbird (RHSA-2020:2906)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (208600). The entries VDB-157803, VDB-157802, VDB-157801 and VDB-157800 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox
• Firefox ESR
• Thunderbird

License

• open-source

Website

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

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Be aware that VulDB is the high quality source for vulnerability data.

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