Vulnerability CVE-2019-1845


Published: 2019-06-05

Description:
A vulnerability in the authentication service of the Cisco Unified Communications Manager IM and Presence (Unified CM IM&P) Service, Cisco TelePresence Video Communication Server (VCS), and Cisco Expressway Series could allow an unauthenticated, remote attacker to cause a service outage for users attempting to authenticate, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient controls for specific memory operations. An attacker could exploit this vulnerability by sending a malformed Extensible Messaging and Presence Protocol (XMPP) authentication request to an affected system. A successful exploit could allow the attacker to cause an unexpected restart of the authentication service, preventing users from successfully authenticating. Exploitation of this vulnerability does not impact users who were authenticated prior to an attack.

Type:

CWE-20

(Improper Input Validation)

Vendor: Cisco
Product: Telepresence video communication server 
Version:
x8.9.2
x8.9.1
x8.9
x8.8.3
x8.8.2
x8.8.1
x8.8
x8.7.3
x8.7.2
x8.7.1
x8.7
x8.6.1
x8.6.0
x8.6
x8.5.3
x8.5.2
x8.5.1
x8.5.0
x8.5
x8.2_base
x8.2.2
x8.2.1
x8.2
x8.1_base
x8.11.4
x8.10.4
x8.10.3
x8.10.2
x8.10.1
x8.10
x8.1.2
x8.1.1
x8.1
x12.5.2
x12.5.1
x12.5
Product: Unified communications manager im and presence service 
Version: 11.5(1);

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial

 References:
http://www.securityfocus.com/bid/108615
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190605-cucm-imp-dos

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