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

medium Nessus Plugin ID 85565
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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: 1.20

Type: combined

Agent: unix

Family: Misc.

Published: 8/20/2015

Updated: 10/9/2020

Dependencies: securitycenter_installed.nbin, securitycenter_detect.nbin

Risk Information

CVSS Score Source: CVE-2015-1793

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

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

Risk Factor: Medium

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:tenable:securitycenter

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/20/2015

Vulnerability Publication Date: 7/9/2015

Reference Information

CVE: CVE-2015-1793

BID: 75652