Null pointer dereference in Linksys WRT54GL
CVE-2022-43972

6.5MEDIUM

Key Information:

Vendor

Linksys
Status
Wrt54gl Wireless-g Broadband Router
Vendor
CVE Published:
9 January 2023

What is CVE-2022-43972?

A null pointer dereference vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A null pointer dereference in the soap_action function within the upnp binary can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action.

Affected Version(s)

WRT54GL Wireless-G Broadband Router Firmware <= 4.30.18.006

References

https://youtu.be/73-1lhvJPNg
https://youtu.be/TeWAmZaKQ_w
https://youtu.be/RfWVYCUBNZ0

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jessie Chick of Trellix ARC
.