Mozilla Firefox/Firefox ESR/Thunderbird origin validation

Summaryinfo

A vulnerability marked as critical has been reported in Mozilla Firefox, Firefox ESR and Thunderbird. This impacts an unknown function. The manipulation leads to origin validation. This vulnerability is documented as CVE-2018-18499. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird (Web Browser) (the affected version is unknown) and classified as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a origin validation vulnerability. Using CWE to declare the problem leads to CWE-346. The product does not properly verify that the source of data or communication is valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A same-origin policy violation allowing the theft of cross-origin URL entries when using a meta http-equiv="refresh" on a page to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.

The bug was discovered 09/05/2018. The weakness was released 02/28/2019 as Bug 1468523 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2018-18499 since 10/19/2018. 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 vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 117939 (Mozilla Thunderbird < 60.2.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (117939). Entry connected to this vulnerability is available at VDB-131260. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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