Cisco ASA TLS CBC Information Disclosure (CSCus08101)

medium Nessus Plugin ID 82429

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its banner, the version of Cisco ASA software on the remote device is affected by an information disclosure vulnerability due to improper block cipher padding by TLSv1 when using Cipher Block Chaining (CBC) mode. A remote attacker, via an 'Oracle Padding' side channel attack, can exploit this vulnerability to gain access to sensitive information. Note that this is a variation of the POODLE attack.

Solution

Apply the relevant patch referenced in the vendor advisory.

See Also

https://www.imperialviolet.org/2014/12/08/poodleagain.html

https://tools.cisco.com/bugsearch/bug/CSCus08101

https://tools.cisco.com/security/center/viewAlert.x?alertId=36740

Plugin Details

Severity: Medium

ID: 82429

File Name: cisco-sa-CSCus08101-tls-poodle-asa.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 3/30/2015

Updated: 8/9/2018

Supported Sensors: Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

Vulnerability Information

CPE: cpe:/a:cisco:adaptive_security_appliance_software

Required KB Items: Host/Cisco/ASA

Patch Publication Date: 3/26/2015

Vulnerability Publication Date: 12/11/2014

Reference Information

CISCO-BUG-ID: CSCus08101