OS command injection in Cisco AsyncOS for Secure Web Appliance

1) OS Command Injection

EUVDB-ID: #VU66597

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-20871

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation within the web interface. A remote user can send a specially crafted HTTP request to the affected device and execute arbitrary OS commands with root privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco AsyncOS for Web Security Appliances: 12.5 - 14.5

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_asyncos_for_web_security_appliances:12.5:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_asyncos_for_web_security_appliances:12.5.1 011:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_asyncos_for_web_security_appliances:12.5.1 043:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-prv-esc-8PdRU8t8

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.