Cisco Security Advisory
cURL and libcurl Vulnerability Affecting Cisco Products: October 2023
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CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
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On October 11, 2023, cURL released Version 8.4.0 of the cURL utility and the libcurl library. This release addressed two security vulnerabilities:
- CVE-2023-38545 - High Security Impact Rating (SIR)
- CVE-2023-38546 - Low SIR
This advisory covers CVE-2023-38545 only. For more information about this vulnerability, see the cURL advisory.
This advisory is available at the following link:
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Cisco investigated its product line to determine which products may be affected by this vulnerability.
This advisory only lists Cisco products and services that are known to include the impacted software component and thus may be vulnerable. Products and services that do not contain the impacted software component are not vulnerable and therefore are not listed in this advisory. Any Cisco product or service that is not explicitly listed in the Affected Products section of this advisory is not affected by the vulnerability described.
Vulnerable Products
Currently, no products are known to be affected by this vulnerability.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
Endpoint Clients and Client Software
- AnyConnect Secure Mobility Client
Network and Content Security Devices
- Adaptive Security Appliance (ASA) Software
- Firepower Threat Defense (FTD) Software
- Identity Services Engine (ISE)
- Secure Email, formerly Email Security Appliance (ESA)
- Secure Email and Web Manager
- Secure Web Appliance
Routing and Switching - Enterprise and Service Provider
- Catalyst SD-WAN Controller, formerly SD-WAN vSmart
- Catalyst SD-WAN Manager, formerly SD-WAN vManage
- Catalyst SD-WAN Validator, formerly SD-WAN vBond
- IOS and IOS XE Software
- IOS XR Software
- MDS 9000 Series Multilayer Switches
- Nexus 3000 Series Switches
- Nexus 5500 Platform Switches
- Nexus 5600 Platform Switches
- Nexus 6000 Series Switches
- Nexus 7000 Series Switches
- Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode
- Nexus 9000 Series Switches in standalone NX-OS mode
- SD-WAN vEdge 100 Series Routers
- SD-WAN vEdge 1000 Series Routers
- SD-WAN vEdge 2000 Series Routers
- SD-WAN vEdge 5000 Series Routers
- SD-WAN vEdge Cloud Router Platforms
Network Management and Provisioning
- Application Policy Infrastructure Controller (APIC)
- Secure Network Analytics
- Telemetry Broker
- ThousandEyes Enterprise and Endpoint Agents
Voice and Unified Communications Devices
- Unified Contact Center Express
Video, Streaming, TelePresence, and Transcoding Devices
- Cisco Expressway Series
Unified Computing
- HyperFlex Storage Replication Adapter
- HyperFlex System
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There are no workarounds that address this vulnerability.
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When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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This vulnerability was publicly disclosed by cURL maintainers on October 11, 2023.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.7 Updated the list of products that are not vulnerable. Products Confirmed Not Vulnerable Final 2024-AUG-27 1.6 Updated the list of products that are not vulnerable. Products Confirmed Not Vulnerable Final 2024-MAR-05 1.5 Updated the list of products that are not vulnerable. Products Confirmed Not Vulnerable Final 2024-FEB-21 1.4 Changed the advisory status to Final. Updated Affected Products to indicate that the investigation is closed. Header, Affected Products Final 2023-NOV-08 1.3 Removed the Products Under Investigation section and updated the list of products confirmed not vulnerable. Affected Products Interim 2023-OCT-31 1.2 Updated the list of products that are under investigation and the list of products confirmed not vulnerable. Affected Products Interim 2023-OCT-20 1.1 Updated the list of products that are under investigation and the list of products confirmed not vulnerable. Affected Products Interim 2023-OCT-13 1.0 Initial public release. - Interim 2023-OCT-12
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