PT-2023-14414 · Linksys · Linksys Wrt54Gl Wireless-G Broadband Router

Jessie Chick · Published 2023-01-09 · Updated 2023-01-13 · CVE-2022-43972

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linksys WRT54GL Wireless-G Broadband Router versions <= 4.30.18.006

Description A null pointer dereference issue exists in the soap action function within the upnp binary. This can be triggered by an unauthenticated attacker via a malicious POST request invoking the AddPortMapping action.

Recommendations For versions <= 4.30.18.006, update the firmware to a version higher than 4.30.18.006 to resolve the issue. As a temporary workaround, consider restricting access to the upnp binary to minimize the risk of exploitation. Avoid using the AddPortMapping action in the affected API endpoint until the issue is resolved.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2022-43972

Affected Products

Linksys Wrt54Gl Wireless-G Broadband Router

References · 6

• 🔥 https://youtu.be/TeWAmZaKQ_w · Exploit
• 🔥 https://youtu.be/RfWVYCUBNZ0 · Exploit
• 🔥 https://youtu.be/73-1lhvJPNg · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-43972 · Security Note
• https://osv.dev/vulnerability/CVE-2022-43972 · Vendor Advisory
• https://t.me/cibsecurity/56184 · Telegram Post