CVE-2017-3804: Medium severity Cisco NX-OS vulnerability
A vulnerability in Intermediate System-to-Intermediate System (IS-IS) protocol packet processing of Cisco Nexus 5000, 6000, and 7000 Series Switches software could allow an unauthenticated, adjacent attacker to cause a reload of the affected device. Switches in the FabricPath domain crash because of an inst001isisfabricpath hap reset when processing a crafted link-state packet. More Information: CSCvc45002. Known Affected Releases: 7.1(3)N1(2.1) 7.1(3)N1(3.12) 7.3(2)N1(0.296) 8.0(1)S2. Known Fixed Releases: 6.2(18)S11 7.0(3)I5(1.170) 7.0(3)I5(2) 7.1(4)N1(0.4) 7.1(4)N1(1b) 7.1(5)N1(0.986) 7.1(5)N1(1) 7.2(3)D1(0.8) 7.3(2)N1(0.304) 7.3(2)N1(1) 8.0(0.96)S0 8.0(1) 8.0(1)E1 8.0(1)S4 8.3(0)CV(0.788).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 6.2(18)S11 - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.0(3)I5(1.170) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.0(3)I5(2) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.1(4)N1(0.4) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.1(4)N1(1b) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.1(5)N1(0.986) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.1(5)N1(1) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.2(3)D1(0.8) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.3(2)N1(0.304) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 7.3(2)N1(1) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 8.0(0.96)S0 - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 8.0(1) - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 8.0(1)E1 - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 8.0(1)S4 - Upgrade
Upgrade
Cisco Nexus 5000/6000/7000 Series Switches software (IS-IS packet processing)to a version that resolves this vulnerability.Fixed in 8.3(0)CV(0.788) - Compensating control
Mitigate the risk by limiting adjacency so an unauthenticated, adjacent attacker cannot send crafted IS-IS link-state packets (e.g., restrict which adjacent devices can form IS-IS adjacency).
Event History
Frequently Asked Questions
What is the severity of CVE-2017-3804?
The severity of CVE-2017-3804 is rated as medium with a score of 6.1.
How do I fix CVE-2017-3804?
To fix CVE-2017-3804, you should upgrade to a fixed version of Cisco NX-OS software that is not affected by this vulnerability.
What products are affected by CVE-2017-3804?
CVE-2017-3804 affects Cisco Nexus 5000, 6000, and 7000 Series Switches running specific NX-OS versions.
Can CVE-2017-3804 be exploited remotely?
CVE-2017-3804 requires an unauthenticated, adjacent attacker to exploit the vulnerability.
What impact does CVE-2017-3804 have on affected devices?
Exploitation of CVE-2017-3804 can cause an affected device to reload, leading to potential service disruption.