Missing XML Validation in Cisco AsyncOS for Web Security Appliances - CVE-2021-1359

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Main Vulnerability Database Vulnerabilities #VU54607

Missing XML Validation in Cisco AsyncOS for Web Security Appliances - CVE-2021-1359

Published: July 8, 2021


Vulnerability identifier: #VU54607
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-1359
CWE-ID: CWE-112
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco AsyncOS for Web Security Appliances
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied XML input for the web interface. A remote authenticated attacker can upload specially crafted XML configuration files to execute arbitrary commands on the underlying operating system and elevate privileges to root.


Remediation

Install updates from vendor's website.

External links