CVE-2011-4499 Missing authorization in n/a
Remote attackers can bypass security controls to create arbitrary port mappings on Linksys routers via UPnP, exposing internal services.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2011-4499?
CVE-2011-4499 is a high-severity missing authorization vulnerability in n/a, published on 22 Nov 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The UPnP IGD implementation in the Broadcom UPnP stack on the Cisco Linksys WRT54G with firmware before 4.30.5, WRT54GS v1 through v3 with firmware before 4.71.1, and WRT54GS v4 with firmware before 1.06.1 allows remote attackers to establish arbitrary port mappings by sending a UPnP AddPortMapping action in a SOAP request to the WAN interface, related to an "external forwarding" vulnerability.
Weakness: CWE-16
Which versions are affected by CVE-2011-4499?
It affects 4 products.
Products include Cisco Linksys Wrt54g Router Firmware, Cisco Linksys Wrt54gs Router Firmware, Linksys Wrt54g, Linksys Wrt54gs.
How do I fix CVE-2011-4499?
No fix has been published for CVE-2011-4499 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2011-4499 being exploited?
There is no known exploitation of CVE-2011-4499 in the wild and no public exploit code.
Sources
Also known as GHSA-f493-r5jh-m3rp.