CVE-2023-20259
First published: Wed Oct 04 2023(Updated: )
A vulnerability in an API endpoint of multiple Cisco Unified Communications Products could allow an unauthenticated, remote attacker to cause high CPU utilization, which could impact access to the web-based management interface and cause delays with call processing. This API is not used for device management and is unlikely to be used in normal operations of the device. This vulnerability is due to improper API authentication and incomplete validation of the API request. An attacker could exploit this vulnerability by sending a crafted HTTP request to a specific API on the device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition due to high CPU utilization, which could negatively impact user traffic and management access. When the attack stops, the device will recover without manual intervention.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Emergency Responder | =14su3 | |
| Cisco Prime Collaboration Deployment | =14su3 | |
| Cisco Unified Communications Manager | =12.5\(1\)su7 | |
| Cisco Unified Communications Manager | =12.5\(1\)su7 | |
| Cisco Unified Communications Manager | =14su3 | |
| Cisco Unified Communications Manager | =14su3 | |
| Cisco Unified Communications Manager Im \& Presence Service | =12.5\(1\)su7 | |
| Cisco Unified Communications Manager Im \& Presence Service | =14su3 | |
| Cisco Unity Connection | =14su3 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-20259?
CVE-2023-20259 is a vulnerability in an API endpoint of multiple Cisco Unified Communications Products that could allow an unauthenticated, remote attacker to cause high CPU utilization and impact access to the web-based management interface.
Which Cisco products are affected by CVE-2023-20259?
Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager, Cisco Unified Communications Manager Session Management, Cisco Unified Communications Manager IM & Presence Service, and Cisco Unity Connection are affected by CVE-2023-20259.
What is the severity of CVE-2023-20259?
CVE-2023-20259 has a severity rating of 7.5 (High).
How can an attacker exploit CVE-2023-20259?
An attacker can exploit CVE-2023-20259 by sending specially crafted API requests to the vulnerable API endpoint.
Is there a fix available for CVE-2023-20259?
Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco Security Advisory for more information and to download the necessary updates.
- collector/nvd-index
- agent/author
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/references
- agent/weakness
- agent/description
- agent/event
- agent/first-publish-date
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/cisco
- canonical/cisco emergency responder
- version/cisco emergency responder/14su3
- canonical/cisco prime collaboration deployment
- version/cisco prime collaboration deployment/14su3
- canonical/cisco unified communications manager
- version/cisco unified communications manager/12.5\(1\)su7
- version/cisco unified communications manager/14su3
- canonical/cisco unified communications manager im \& presence service
- version/cisco unified communications manager im \& presence service/12.5\(1\)su7
- version/cisco unified communications manager im \& presence service/14su3
- canonical/cisco unity connection
- version/cisco unity connection/14su3