Medium severity · published Jun 13, 2017
CVE-2017-6666
A vulnerability in the forwarding component of Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series Routers could allow an authenticated, local attacker to…
6.0
CVSS
0.3%
EPSS
No
On KEV
Description
A vulnerability in the forwarding component of Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series Routers could allow an authenticated, local attacker to cause the router to stop forwarding data traffic across Traffic Engineering (TE) tunnels, resulting in a denial of service (DoS) condition. More Information: CSCvd16665. Known Affected Releases: 6.2.11.BASE. Known Fixed Releases: 6.1.3 6.1.2 6.3.1.8i.BASE 6.2.11.8i.BASE 6.2.2.9i.BASE 6.1.32.11i.BASE 6.1.31.10i.BASE 6.1.4.3i.BASE.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IX
Ios XR · Cisco
6.0.0; 6.0.1; 6.0_base; 6.1.0; 6.1.1; 6.1.2; +3 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-6666
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-6666
Third Party Advisory
http://www.securityfocus.com/bid/98987
www.securitytracker.com
http://www.securitytracker.com/id/1038630
Mitigation
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-ncs
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