Vulnerability Details

Cisco ASA DNS Memory Exhaustion Vulnerability

Published: 2015-05-29 07:26:28
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:C

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

Summary:
Cisco ASA is prone to a DNS memory exhaustion vulnerability.

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
The vulnerability is due to improper processing of DNS packets. An attacker could exploit this vulnerability by sending a request to an affected Cisco ASA appliance, which can cause it to generate a DNS request packet. The attacker would need to be able to intercept this request and reply with a crafted DNS reply packet.

Impact:
An unauthenticated, remote attacker could exploit this vulnerability by sending a request to a targeted device, causing the device to generate a DNS request packet. If the attacker can intercept the request and reply with a crafted DNS packet, the attacker could cause the device to exhaust available memory resources to cause system instability that results in a DoS condition.

Affected Versions:
Version 7.2, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 9.0, 9.1, 9.2, 9.3

Recommendations:
Apply the appropriate updates from Cisco.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2015-0676

SecurityFocus Bugtraq ID:

https://www.securityfocus.com/bid/73966

References:

http://tools.cisco.com/security/center/viewAlert.x?alertId=38184

Severity
High
CVSS Score
7.1
Published
2015-05-29
Modified
2018-10-26
Category
CISCO

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