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CVE-2018-0117

CVE information

Published

4 years ago

Last Modified

2 years ago

CVSSv2.0 Severity

High

CVSSv3.1 Severity

High

Impact Analysis

Description

A vulnerability in the ingress packet processing functionality of the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software could allow an unauthenticated, remote attacker to cause both control function (CF) instances on an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient handling of user-supplied data by the affected software. An attacker could exploit this vulnerability by sending malicious traffic to the internal distributed instance (DI) network address on an affected system. A successful exploit could allow the attacker to cause an unhandled error condition on the affected system, which would cause the CF instances to reload and consequently cause the entire VPC to reload, resulting in the disconnection of all subscribers and a DoS condition on the affected system. This vulnerability affects Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software N4.0 through N5.5 with the Cisco StarOS operating system 19.2 through 21.3. Cisco Bug IDs: CSCve17656..

CVSSv2.0 Score

Severity
High
Base Score
7.8/10
Exploit Score
10/10
Access Vector
Network
Access Complexity
Low
Authentication Required
None
Impact Score
6.9/10
Confidentiality Impact
None
Availability Impact
Complete
Integrity Impact
None

CVSSv3.1 Score

Severity
High
Base Score
8.6/10
Exploit Score
3.9/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
4/10
Confidentiality Impact
None
Availability Impact
High
Integrity Impact
None
Scope
Changed
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:cisco:asr_5000_firmware:21.1.v0.66836:*:*:*:*:*:*:
  Yes
-
cpe:2.3:o:cisco:asr_5000_firmware:21.1.v7:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:asr_5000_firmware:21.3.0:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:asr_5000_firmware:21.6.0:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:o:cisco:asr_5500_firmware:21.1.v0.66836:*:*:*:*:*:*:
  Yes
-
cpe:2.3:o:cisco:asr_5500_firmware:21.1.v7:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:asr_5500_firmware:21.3.0:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:asr_5500_firmware:21.6.0:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*
  No
-