Tenable SecurityCenter Alternative Certificate Validation Bypass Vulnerability (TNS-2015-08)

Medium Nessus Plugin ID 85565

Synopsis

The remote application is affected by a certificate validation bypass vulnerability.

Description

The SecurityCenter application installed on the remote host is affected by a certificate validation bypass vulnerability in the bundled OpenSSL library. The library is version 1.0.1n or later and prior to 1.0.1p. It is, therefore, affected by a flaw in the X509_verify_cert() function that is triggered when locating alternate certificate chains in cases where the first attempt to build such a chain fails. A remote attacker can exploit this to cause certain certificate checks to be bypassed, resulting in an invalid certificate being considered valid.

Solution

Apply the relevant patch referenced in the vendor advisory.

See Also

https://www.tenable.com/security/tns-2015-08

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

Plugin Details

Severity: Medium

ID: 85565

File Name: securitycenter_openssl_1_0_1p.nasl

Version: 1.16

Type: local

Family: Misc.

Published: 2015/08/20

Updated: 2018/12/14

Dependencies: 71157, 71158

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2015-1793

CVSS v2.0

Base Score: 6.4

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

CVSS v3.0

Base Score: 6.5

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

Vulnerability Information

CPE: cpe:/a:tenable:securitycenter

Patch Publication Date: 2015/07/20

Vulnerability Publication Date: 2015/07/09

Reference Information

CVE: CVE-2015-1793

BID: 75652