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CVE-2017-6770

Published: Aug 7, 2017Updated: May 13, 2026 Sources: CVE List NVDCWE-20
4.2MEDIUM
NVD MITRE
EPSS Score
1.7%
Top 25.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-20

Affected Products

cisco
commercial·USaka cisco systems inc., cisco systems
nx-os
Networking Infrastructure
nx-os for nexus 5500 platform switches
Networking Infrastructure
nx-os for nexus 5600 platform switches
Networking Infrastructure
nx-os for nexus 7700 series switches
Networking Infrastructure
adaptive security appliance software
Networking Infrastructure
iosOn-premFirmware
Networking Infrastructure / router-switch
ios xeOn-premFirmware
Networking Infrastructure / router-switch
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2017-6770?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

http://www.securityfocus.com/bid/100005
securityfocus.com
http://www.securitytracker.com/id/1039005
securitytracker.com
http://www.securitytracker.com/id/1039006
securitytracker.com
and 2 more references View all →

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