Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2018-0117

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
08/02/2018
Last modified:
09/10/2019

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.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.60 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
8.60
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:asr_5000_firmware:21.1.v0.66836:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asr_5000_firmware:21.1.v7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asr_5000_firmware:21.3.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asr_5000_firmware:21.6.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asr_5500_firmware:21.1.v0.66836:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asr_5500_firmware:21.1.v7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asr_5500_firmware:21.3.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asr_5500_firmware:21.6.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools