Denial of Service Vulnerability in Cisco Unified Communications Products
CVE-2023-20259

7.5HIGH

Key Information:

Vendor

Cisco
Status
Cisco Emergency Responder
Cisco Unity Connection
Cisco Unified Communications Manager
Cisco Unified Communications Manager IM and Presence Service
Vendor
CVE Published:
4 October 2023

What is CVE-2023-20259?

A vulnerability exists within an improperly secured API endpoint across various Cisco Unified Communications Products. An unauthenticated remote attacker could exploit this flaw by sending a specially crafted HTTP request. This could result in excessive CPU utilization, leading to potential delays in call processing and affecting access to the web-based management interface. This API is not meant for device management and its exploitation could result in a denial of service condition. Fortunately, once the attack ceases, the affected devices are designed to recover automatically without needing manual intervention.

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Affected Version(s)

Cisco Emergency Responder 12.5(1)SU7

Cisco Emergency Responder 14

Cisco Emergency Responder 14SU3

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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