CVE Catalog

CVE-2017-3790

High
Published: Translated: NVD NIST

Summary

A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data.

Risk Assessment

An attacker could exploit this vulnerability to remotely crash the system, potentially leading to service interruptions and affecting the availability of communication systems within the organization.

Recommendation

It is recommended to update the software to version X8.8.2 or later to mitigate this vulnerability. There are no workarounds available that could address the risks associated with this flaw.

Related vulnerabilities

Original NVD description (English source)

A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data. An attacker could exploit this vulnerability by sending crafted H.224 data in Real-Time Transport Protocol (RTP) packets in an H.323 call. An exploit could allow the attacker to overflow a buffer in a cache that belongs to the received packet parser, which will result in a crash of the application, resulting in a DoS condition. All versions of Cisco Expressway Series Software and Cisco TelePresence VCS Software prior to version X8.8.2 are vulnerable. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Cisco Bug IDs: CSCus99263.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS