Medium severity · published Mar 21, 2017
CVE-2017-3850
A vulnerability in the Autonomic Networking Infrastructure (ANI) feature of Cisco IOS Software (15.4 through 15.6) and Cisco IOS XE Software (3.7 through 3.18, and 16) could allow…
5.9
CVSS
2.5%
EPSS
No
On KEV
Description
A vulnerability in the Autonomic Networking Infrastructure (ANI) feature of Cisco IOS Software (15.4 through 15.6) and Cisco IOS XE Software (3.7 through 3.18, and 16) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incomplete input validation on certain crafted packets. An attacker could exploit this vulnerability by sending a crafted IPv6 packet to a device that is running a Cisco IOS Software or Cisco IOS XE Software release that supports the ANI feature. A device must meet two conditions to be affected by this vulnerability: (1) the device must be running a version of Cisco IOS Software or Cisco IOS XE Software that supports ANI (regardless of whether ANI is configured); and (2) the device must have a reachable IPv6 interface. An exploit could allow the attacker to cause the affected device to reload. Cisco Bug IDs: CSCvc42729.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IX
IOS XE · Cisco
3.7.0e; 3.7.1e; 3.7.2e; 3.7.3e; 3.7.4e; 3.7.5e; +34 more · source: NVD
IO
Ios · Cisco
15.2(3)e; 15.2(3)e1; 15.2(3)e2; 15.2(3)e3; 15.2(4)e; 15.2(4)e1; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-3850
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-3850
Third Party Advisory
http://www.securityfocus.com/bid/96971
Third Party Advisory
http://www.securitytracker.com/id/1038065
Mitigation
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-aniipv6
More from IOS XE
10.0
CVE-2023-20198
Cisco IOS XE Web UI Privilege Escalation Vulnerability
9.8
CVE-2018-0151
Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution Vulnerability
9.8
CVE-2017-3881
Cisco IOS and IOS XE Remote Code Execution Vulnerability
8.8
CVE-2018-0167
Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
8.8
CVE-2017-6738
Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability