CVE-1999-1129 Missing authorization in n/a
Remote attackers can inject frames into other VLANs by forging trunking tags, bypassing network segmentation on Cisco Catalyst switches.
- 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-1999-1129?
CVE-1999-1129 is a high-severity missing authorization vulnerability in Cisco Ios, published on 12 Sep 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco Catalyst 2900 Virtual LAN (VLAN) switches allow remote attackers to inject 802.1q frames into another VLAN by forging the VLAN identifier in the trunking tag.
Which versions are affected by CVE-1999-1129?
It affects 2 products.
Products include Cisco Catalyst 2900 Vlan, Cisco Ios.
How do I fix CVE-1999-1129?
No fix has been published for CVE-1999-1129 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-1999-1129 being exploited?
There is no known exploitation of CVE-1999-1129 in the wild and no public exploit code.
Sources
Also known as GHSA-29q9-4h2h-9p7g.