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Cisco Adaptive Security Appliance XML Parser Denial of Service Vulnerability

Information

Severity

Severity

Medium

Family

Family

CISCO

CVSSv2 Base

CVSSv2 Base

6.8

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

3 years ago

Summary

A vulnerability in XML parser code of Cisco Adaptive Security Appliance Software could allow an authenticated, remote attacker to cause system instability or a reload of the affected system. The vulnerability is due to insufficient hardening of the XML parser configuration. An attacker could exploit this vulnerability in multiple ways by utilizing a malicious file. An attacker with administrative privileges could exploit this by uploading a malicious XML file on the system and trigger the XML code to parse the malicious file. Additionally, an attacker with Clienteles SSL VPN access could exploit this vulnerability by sending a crafted XML file. An exploit would allow the attacker to crash the XML parser process, which could cause system instability, memory exhaustion, and in some cases lead to a reload of the affected system. Cisco has released software updates that address this vulnerability. Workarounds that address this vulnerability are not available.

Detection Method

Detection Method

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

Solution

Solution

See the referenced vendor advisory for a solution.

Common Vulnerabilities and Exposures (CVE)