Information disclosure in Cisco Email and Web Appliances

1) Incorrect authorization

EUVDB-ID: #VU68969

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-20942

CWE-ID: CWE-863 - Incorrect Authorization

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to weak enforcement of back-end authorization checks within the web-based management interface. A remote authenticated user can send a specially crafted HTTP request to the affected device and obtain confidential data that is stored on the affected device.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco AsyncOS for Cisco Email Security Appliance: before 14.2.1-015

Cisco AsyncOS for Web Security Appliances: before 12.0.5-011

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_asyncos_for_cisco_email_security_appliance:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_asyncos_for_web_security_appliances:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cnt-sec-infodiscl-BVKKnUG
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwc43104
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwc43106
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwc43102

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.