Vulnerability Name: | CVE-2019-1721 (CCN-159586) | ||||||||||||
Assigned: | 2018-12-06 | ||||||||||||
Published: | 2019-04-17 | ||||||||||||
Updated: | 2020-10-07 | ||||||||||||
Summary: | A vulnerability in the phone book feature of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to cause the CPU to increase to 100% utilization, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to improper handling of the XML input. An attacker could exploit this vulnerability by sending a Session Initiation Protocol (SIP) message with a crafted XML payload to an affected device. A successful exploit could allow the attacker to exhaust CPU resources, resulting in a DoS condition. Manual intervention may be required to recover the device. This vulnerability is fixed in Cisco Expressway Series and Cisco TelePresence Video Communication Server Releases X12.5.1 and later. | ||||||||||||
CVSS v3 Severity: | 6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) 5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
6.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
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CVSS v2 Severity: | 6.8 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C)
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Vulnerability Type: | CWE-20 | ||||||||||||
Vulnerability Consequences: | Denial of Service | ||||||||||||
References: | Source: MITRE Type: CNA CVE-2019-1721 Source: BID Type: Third Party Advisory, VDB Entry 108016 Source: XF Type: UNKNOWN cisco-cve20191721-dos(159586) Source: CCN Type: Cisco Security Advisory cisco-sa-20190417-es-tvcs-dos Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability Source: CISCO Type: Vendor Advisory 20190417 Cisco Expressway Series and Cisco TelePresence Video Communication Server Denial of Service Vulnerability | ||||||||||||
Vulnerable Configuration: | Configuration 1: Configuration CCN 1: ![]() | ||||||||||||
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