Strix
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CVE-2017-6770

MEDIUMCVSS 4.2/10EPSS 1.69%

Last modified

CVE-2017-6770 is a medium-severity vulnerability rated 4.2/10 on the CVSS scale. Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 through 3.18 are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an unauthenticated, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table, allowing the attacker to intercept or black-hole traffic. EPSS estimates a 1.69% chance of exploitation in the next 30 days.

Description

Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 through 3.18 are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an unauthenticated, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table, allowing the attacker to intercept or black-hole traffic. The attacker could exploit this vulnerability by injecting crafted OSPF packets. Successful exploitation could cause the targeted router to flush its routing table and propagate the crafted OSPF LSA type 1 update throughout the OSPF AS domain. To exploit this vulnerability, an attacker must accurately determine certain parameters within the LSA database on the target router. This vulnerability can only be triggered by sending crafted unicast or multicast OSPF LSA type 1 packets. No other LSA type packets can trigger this vulnerability. OSPFv3 is not affected by this vulnerability. Fabric Shortest Path First (FSPF) protocol is not affected by this vulnerability. Cisco Bug IDs: CSCva74756, CSCve47393, CSCve47401.

Metrics

CVSS 3.1
4.2/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS Probability
1.69%

74.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoNx-Os1.1\(0.825a\)
CiscoNx-Os1.1\(1g\)
CiscoNx-Os For Nexus 5500 Platform Switches7.3\(1\)n1\(1\)
CiscoNx-Os For Nexus 5500 Platform Switchesbase
CiscoNx-Os For Nexus 5600 Platform Switches7.3\(1\)n1\(1\)
CiscoNx-Os For Nexus 5600 Platform Switchesbase
CiscoNx-Os For Nexus 7700 Series Switches8.0\(1\)\(ed\)
CiscoNx-Os For Nexus 7700 Series Switches8.1\(1\)\(ed\)
CiscoNx-Os For Nexus 7700 Series Switchesbase
CiscoAdaptive Security Appliance Software7.0.1
CiscoAdaptive Security Appliance Software7.0.1.4
CiscoAdaptive Security Appliance Software7.0.2
CiscoAdaptive Security Appliance Software7.0.3
CiscoAdaptive Security Appliance Software7.0.4
CiscoAdaptive Security Appliance Software7.0.4.2
CiscoAdaptive Security Appliance Software7.0.5
CiscoAdaptive Security Appliance Software7.0.5.12
CiscoAdaptive Security Appliance Software7.0.6
CiscoAdaptive Security Appliance Software7.0.6.4
CiscoAdaptive Security Appliance Software7.0.6.8
CiscoAdaptive Security Appliance Software7.0.6.18
CiscoAdaptive Security Appliance Software7.0.6.22
CiscoAdaptive Security Appliance Software7.0.6.26
CiscoAdaptive Security Appliance Software7.0.6.29
CiscoAdaptive Security Appliance Software7.0.6.32
CiscoAdaptive Security Appliance Software7.0.7
CiscoAdaptive Security Appliance Software7.0.7.1
CiscoAdaptive Security Appliance Software7.0.7.4
CiscoAdaptive Security Appliance Software7.0.7.9
CiscoAdaptive Security Appliance Software7.0.7.12
CiscoAdaptive Security Appliance Software7.0.8
CiscoAdaptive Security Appliance Software7.0.8.2
CiscoAdaptive Security Appliance Software7.0.8.8
CiscoAdaptive Security Appliance Software7.0.8.12
CiscoAdaptive Security Appliance Software7.0.8.13
CiscoAdaptive Security Appliance Software7.1.2
CiscoAdaptive Security Appliance Software7.1.2.16
CiscoAdaptive Security Appliance Software7.1.2.20
CiscoAdaptive Security Appliance Software7.1.2.24
CiscoAdaptive Security Appliance Software7.1.2.28
CiscoAdaptive Security Appliance Software7.1.2.38
CiscoAdaptive Security Appliance Software7.1.2.42
CiscoAdaptive Security Appliance Software7.1.2.46
CiscoAdaptive Security Appliance Software7.1.2.49
CiscoAdaptive Security Appliance Software7.1.2.53
CiscoAdaptive Security Appliance Software7.1.2.61
CiscoAdaptive Security Appliance Software7.1.2.64
CiscoAdaptive Security Appliance Software7.1.2.72
CiscoAdaptive Security Appliance Software7.1.2.81
CiscoAdaptive Security Appliance Software7.2.1

Showing 50 of 3788 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-6770?
Cisco IOS 12.0 through 15.6, Adaptive Security Appliance (ASA) Software 7.0.1 through 9.7.1.2, NX-OS 4.0 through 12.0, and IOS XE 3.6 through 3.18 are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. This vulnerability could allow an unauthenticated, remote attacker to take full control of the OSPF Autonomous System (AS) domain routing table, allowing the attacker to intercept or black-hole traffic. The attacker could exploit this vulnerability by injecting crafted OSPF packets. Successful exploitation could cause the targeted router to flush its routing table and propagate the crafted OSPF LSA type 1 update throughout the OSPF AS domain. To exploit this vulnerability, an attacker must accurately determine certain parameters within the LSA database on the target router. This vulnerability can only be triggered by sending crafted unicast or multicast OSPF LSA type 1 packets. No other LSA type packets can trigger this vulnerability. OSPFv3 is not affected by this vulnerability. Fabric Shortest Path First (FSPF) protocol is not affected by this vulnerability. Cisco Bug IDs: CSCva74756, CSCve47393, CSCve47401.
How severe is CVE-2017-6770?
CVE-2017-6770 has a CVSS score of 4.2/10 (MEDIUM severity). The EPSS model estimates a 1.69% probability of exploitation in the next 30 days.
How do I fix CVE-2017-6770?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-6770?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST