Cisco Prime Security Manager OpenSSL Alternative Chains Certificate Forgery (cisco-sa-20150710-openssl)

medium Nessus Plugin ID 86105
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VPR Score: 3.3

Synopsis

The management application installed on the remote host is affected by a certificate authentication bypass vulnerability.

Description

According to its self-reported version number, the version of Cisco Prime Security Manager installed on the remote host has a bundled version of OpenSSL that is affected by a certificate validation bypass vulnerability. The vulnerability exists due to a flaw in the X509_verify_cert() function in x509_vfy.c that is triggered when locating alternate certificate chains when the first attempt to build such a chain fails. A remote attacker can exploit this, by using a valid leaf certificate as a certificate authority (CA), to issue invalid certificates that will bypass authentication.

Solution

Upgrade to Cisco Prime Security Manager 9.3.4.2 Build 11 or later.

See Also

http://www.nessus.org/u?3b4e4a60

https://www.openssl.org/news/secadv/20150709.txt

Plugin Details

Severity: Medium

ID: 86105

File Name: cisco-sa-CSCuv26213-prsm.nasl

Version: 1.12

Type: remote

Family: CGI abuses

Published: 9/23/2015

Updated: 1/19/2021

Dependencies: 62181

Risk Information

Risk Factor: Medium

VPR Score: 3.3

CVSS Score Source: CVE-2015-1793

CVSS v2.0

Base Score: 6.4

Temporal Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:prime_security_manager, cpe:/a:openssl:openssl

Required KB Items: installed_sw/Cisco PRSM

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/15/2015

Vulnerability Publication Date: 7/9/2015

Reference Information

CVE: CVE-2015-1793

BID: 75652