Remote code execution in Cisco WebEx Network Recording Player

1) Buffer overflow

EUVDB-ID: #VU7157

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6669

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or possibly execute arbitrary code on the target system.

The weakness exists due to multiple buffer overflows in the Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files. A remote attacker can provide a malicious ARF file via email or URL, trcik the victim into launching it, trigger memory corruption and cause the affected player to crash or even execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update WBS29 to version T29.13.130 or later.
Update WBS30 to version T30.17 or later.
Update WBS31 to version T31.10 or later.

Vulnerable software versions

Cisco WebEx Network Recording Player: T29 - T31

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170621-wnrp

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.