Information disclosure in Cisco WebEx Meetings Server

1) Information disclosure

EUVDB-ID: #VU6518

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-6651

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to gain potentially sensitive information.

The weakness exists due to an incomplete configuration of the robots.txt file on customer-hosted WebEx solutions and occurs when the Short URL functionality is not activated. A remote attacker can send a specially crafted robots.txt file and access scheduled customer meetings.

Successful exploitation of the vulnerability results in information disclosure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cisco WebEx Meetings Server: 2.5 - 2.8

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_webex_meetings_server:2.5:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_webex_meetings_server:2.6:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_webex_meetings_server:2.7:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170510-cwms

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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