SonicWALL NSv Cryptographically Weak PRNG Authentication Bypass Vulnerability
January 9th, 2025
Vulnerability Details
This vulnerability allows remote attackers to bypass authentication on affected installations of SonicWALL NSv. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the generation of cookies. The issue results from the use of a cryptographically weak pseudo-random number generator. An attacker can leverage this vulnerability to bypass authentication on the system.
Additional Details
SonicWALL has issued an update to correct this vulnerability. More details can be found at:
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0003
Disclosure Timeline
- 2024-11-05 - Vulnerability reported to vendor
- 2025-01-09 - Coordinated public release of advisory
- 2025-01-09 - Advisory Updated
Credit
Daan Keuper, Thijs Alkemade and Khaled Nassar of Computest Security
