nanog mailing list archives
Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability
From: "Dale W. Carder" <dwcarder () wisc edu>
Date: Thu, 11 Feb 2016 12:06:08 -0600
Thus spake Andrew (Andy) Ashley (andrew.a () aware co th) on Thu, Feb 11, 2016 at 02:35:51PM +0000:
Is a control-plane ACL to limit isakmp traffic (UDP/500) to an affected ASA from desired sources enough to mitigate this attack, until upgrades can be performed?
It's worth noting that is not listed as a workaround (they typically use branding like "infrastructure acl's" or some such) to mitigate it on the affected box. Upstream, yes that would seem to be intuitive. Perhaps because you are corrupting the heap with fragments you are outside of where the ACL is applied? Dale
Current thread:
- Fwd: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Sadiq Saif (Feb 10)
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Adrian M (Feb 11)
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Andrew (Andy) Ashley (Feb 11)
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Dale W. Carder (Feb 11)
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Marco Teixeira (Feb 12)
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Andrew (Andy) Ashley (Feb 11)
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Adrian M (Feb 15)
- Message not available
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Adrian M (Feb 15)
- Re: [c-nsp] Cisco Security Advisory: Cisco ASA Software IKEv1 and IKEv2 Buffer Overflow Vulnerability Adrian M (Feb 11)