Denial of service in Cisco Meeting Server



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-12311
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Cisco Meeting Server
Client/Desktop applications / Multimedia software

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper input validation

EUVDB-ID: #VU9383

Risk: Low

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

CVE-ID: CVE-2017-12311

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to H.264 frame has an invalid picture parameter set (PPS) value. A remote attacker can send a specially crafted H.264 frame and cause the media process to  restart.

Mitigation

The vulnerability is fixed in the following versions: 2.3.TBD, 2.2.9.

Vulnerable software versions

Cisco Meeting Server: 2.0 - 2.3

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-cms


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.



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