Information disclosure in Cisco Security Appliances

1) Information disclosure

EUVDB-ID: #VU7983

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6783

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information.

The vulnerability exists in SNMP polling for the Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Security Management Appliance (SMA) due to insufficient protection of protect confidential information at rest in response to Simple Network Management Protocol (SNMP) poll requests. A remote attacker with knowledge of configured SNMP community string can make a crafted SNMP poll request to the targeted security appliance and discover confidential information.

Successful exploitation of the vulnerability may result in additional reconnaissance attacks.

Mitigation

Update Web Security Appliance to version 11.0.edns-201.
Update Email Security Appliance to version 11.0.0-105.
Update Content Security Management Appliance to version 11.0.0-060.

Vulnerable software versions

Cisco Content Security Management Appliance: 10.1.0 037

Cisco Email Security Appliance: 9.7.2 065

Cisco Web Security Appliance: 10.0.0 230

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170816-csa

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.