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

Medium Nessus Plugin ID 86105

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: 1.8

Type: remote

Family: CGI abuses

Published: 2015/09/23

Updated: 2018/11/15

Dependencies: 62181

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.4

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

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

Required KB Items: installed_sw/Cisco PRSM

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/09/15

Vulnerability Publication Date: 2015/07/09

Reference Information

CVE: CVE-2015-1793

BID: 75652

CISCO-BUG-ID: CSCuv26213

CISCO-SA: cisco-sa-20150710-openssl