Description
Cisco IOS 9.1 and earlier does not properly handle extended IP access lists when the IP route cache is enabled and the "established" keyword is set, which could allow attackers to bypass filters.
Product(s):
- Cisco IOS
- Cisco IOS 1.6.0.0
- Cisco IOS 1.8.0
- Cisco IOS 2.3
- Cisco IOS 3.10.0ce
- Cisco IOS 3.10.0e
- Cisco IOS 3.10.0s
- Cisco IOS 3.10.10s
- Cisco IOS 3.10.1ae
- Cisco IOS 3.10.1e
- Cisco IOS 3.10.1s
- Cisco IOS 3.10.1se
- Cisco IOS 3.10.1xbs
- Cisco IOS 3.10.1xcs
- Cisco IOS 3.10.2as
- Cisco IOS 3.10.2e
- Cisco IOS 3.10.2s
- Cisco IOS 3.10.2ts
- Cisco IOS 3.10.3e
- Cisco IOS 3.10.3s
- Cisco IOS 3.10.4s
- Cisco IOS 3.10.5s
- Cisco IOS 3.10.6s
- Cisco IOS 3.10.7s
- Cisco IOS 3.10.8as
- Cisco IOS 3.10.8s
- Cisco IOS 3.10.9s
- Cisco IOS 3.11.0e
- Cisco IOS 3.11.0s
- Cisco IOS 3.11.1ae
- Cisco IOS 3.11.1e
- Cisco IOS 3.11.1s
- Cisco IOS 3.11.2ae
- Cisco IOS 3.11.2e
- Cisco IOS 3.11.2s
- Cisco IOS 3.11.3ae
- Cisco IOS 3.11.3e
- Cisco IOS 3.11.3s
- Cisco IOS 3.11.4e
- Cisco IOS 3.11.4s
- Cisco IOS 3.11.5e
- Cisco IOS 3.11.6e
- Cisco IOS 3.12.0as
- Cisco IOS 3.12.0s
- Cisco IOS 3.12.1s
- Cisco IOS 3.12.2s
- Cisco IOS 3.12.3s
- Cisco IOS 3.12.4s
- Cisco IOS 3.13.0as
- Cisco IOS 3.13.0s
- Cisco IOS 3.13.10s
- Cisco IOS 3.13.1s
- Cisco IOS 3.13.2as
- Cisco IOS 3.13.2s
- Cisco IOS 3.13.3s
- Cisco IOS 3.13.4s
- Cisco IOS 3.13.5as
- Cisco IOS 3.13.5s
- Cisco IOS 3.13.6as
- Cisco IOS 3.13.6bs
- Cisco IOS 3.13.6s
- Cisco IOS 3.13.7as
- Cisco IOS 3.13.7s
- Cisco IOS 3.13.8s
- Cisco IOS 3.13.9s
- Cisco IOS 3.14.0s
- Cisco IOS 3.14.1s
- Cisco IOS 3.14.2s
- Cisco IOS 3.14.3s
- Cisco IOS 3.14.4s
- Cisco IOS 3.15.0s
- Cisco IOS 3.15.1cs
- Cisco IOS 3.15.1s
- Cisco IOS 3.15.2s
- Cisco IOS 3.15.3s
- Cisco IOS 3.15.4s
- Cisco IOS 3.16.0as
- Cisco IOS 3.16.0bs
- Cisco IOS 3.16.0cs
- Cisco IOS 3.16.0s
- Cisco IOS 3.16.10as
- Cisco IOS 3.16.10bs
- Cisco IOS 3.16.10s
- Cisco IOS 3.16.1
- Cisco IOS 3.16.1as
- Cisco IOS 3.16.1s
- Cisco IOS 3.16.2as
- Cisco IOS 3.16.2bs
- Cisco IOS 3.16.2s
- Cisco IOS 3.16.3as
- Cisco IOS 3.16.3s
- Cisco IOS 3.16.4as
- Cisco IOS 3.16.4bs
- Cisco IOS 3.16.4cs
- Cisco IOS 3.16.4ds
- Cisco IOS 3.16.4es
- Cisco IOS 3.16.4gs
- Cisco IOS 3.16.4s
- Cisco IOS 3.16.5as
- +145 additional
Question to Ask Vendors:
- Can you confirm whether your systems are affected by CVE-1999-1306, and if so, what steps are you currently taking to mitigate this vulnerability?
- What is your estimated timeline for fully resolving CVE-1999-1306 in your products or services, and how will you communicate updates on this issue to us as your customer?
Recommended Actions:
- Check out the advisory links provided below.