Reliance on Reverse DNS Resolution for a Security-Critical Action
CVE-2025-8036
Summary
Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.
- LOW
- NETWORK
- HIGH
- UNCHANGED
- REQUIRED
- NONE
- HIGH
- NONE
CWE-350 - Reliance on Reverse DNS Resolution for a Security-Critical Action
The software performs reverse DNS resolution on an IP address to obtain the hostname and make a security decision, but it does not properly ensure that the IP address is truly associated with the hostname.
References
Advisory Timeline
- Published
