ZDI-22-523: (Pwn2Own) NETGEAR R6700v3 circled Stack-based Buffer Overflow Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| NETGEAR R6700v3 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-22-523?
The severity of ZDI-22-523 is rated as critical due to the potential for arbitrary code execution.
How do I fix ZDI-22-523?
To fix ZDI-22-523, update the NETGEAR R6700v3 router firmware to the latest version provided by NETGEAR.
What types of attacks could exploit ZDI-22-523?
ZDI-22-523 could be exploited by network-adjacent attackers to execute arbitrary code on affected NETGEAR R6700v3 routers.
Is authentication required to exploit ZDI-22-523?
Yes, although authentication is required, the vulnerability allows for bypassing the existing authentication mechanism.
What devices are affected by ZDI-22-523?
ZDI-22-523 affects NETGEAR R6700v3 routers with vulnerable firmware.
- agent/references
- agent/type
- agent/softwarecombine
- agent/title
- agent/severity
- agent/description
- agent/source
- agent/tags
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-22-523
- alias/ZDI-CAN-15879
- alias/CVE-2022-27646
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/event
- vendor/netgear
- canonical/netgear r6700v3 firmware