Denial of service in Cisco Meeting Server

1) Improper input validation

EUVDB-ID: #VU12785

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0280

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The weakness exists in the Real-Time Transport Protocol (RTP) bitstream processing due to insufficient input validation of incoming RTP bitstreams. A remote attacker can send a specially crafted RTP bitstream to a target Cisco Meeting Server, deny audio and video services and cause the service to crash.

Mitigation

Update to versions 2.3, 2.3.1, 2.2.10 or 2.1.12.

Vulnerable software versions

Cisco Meeting Server: 2.1 - 2.2

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-msms

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.