ZDI-22-409: (Pwn2Own) Cisco RV340 NGINX sessionid Directory Traversal Authentication Bypass Vulnerability
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Cisco RV340 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the NGINX web server. When parsing the sessionid cookie, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to bypass authentication on the system.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco RV340W Firmware |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of ZDI-22-409?
The severity of ZDI-22-409 is classified as critical due to the potential for unauthenticated access.
How do I fix ZDI-22-409?
To fix ZDI-22-409, install the latest firmware update provided by Cisco for the RV340 routers.
Who is affected by ZDI-22-409?
Organizations using Cisco RV340 routers are affected by the ZDI-22-409 vulnerability.
What kind of attacks can occur due to ZDI-22-409?
Attackers can exploit ZDI-22-409 to bypass authentication and gain unauthorized access to the router's configuration.
Is authentication required to exploit ZDI-22-409?
No, authentication is not required to exploit the ZDI-22-409 vulnerability.
- agent/type
- agent/references
- agent/softwarecombine
- agent/title
- agent/severity
- agent/description
- agent/source
- agent/tags
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-22-409
- alias/ZDI-CAN-15610
- alias/CVE-2022-20705
- alias/CVE-2022-20707
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/event
- vendor/cisco
- canonical/cisco rv340w firmware