Denial of service in Cisco TelePresence Video Communication Server

1) Improper input validation

EUVDB-ID: #VU14431

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-0409

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

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

The vulnerability exists in the XCP Router service due to improper validation of user-supplied input. A remote attacker can send a malicious IPv4 or IPv6 packet to an affected device on TCP port 7400, overread a buffer and cause the XCP Router service to crash and restart.

Mitigation

Update to version X8.11.

Vulnerable software versions

Cisco TelePresence Video Communication Server: X8.1 - X8.10.4

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_telepresence_video_communication_server:X8.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_telepresence_video_communication_server:X8.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_telepresence_video_communication_server:X8.5:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-ucmimps-dos

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.