CVE-2021-34740

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Summary

CVECVE-2021-34740
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-09-23 03:15:00 UTC
Updated2023-11-07 03:36:00 UTC
DescriptionA vulnerability in the WLAN Control Protocol (WCP) implementation for Cisco Aironet Access Point (AP) software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect error handling when an affected device receives an unexpected 802.11 frame. An attacker could exploit this vulnerability by sending certain 802.11 frames over the wireless network to an interface on an affected AP. A successful exploit could allow the attacker to cause a packet buffer leak. This could eventually result in buffer allocation failures, which would trigger a reload of the affected device.

Risk And Classification

Problem Types: CWE-401

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco 1100-4g/6g Integrated Services Router - All All All
Hardware Cisco 1100-4p Integrated Services Router - All All All
Hardware Cisco 1100-8p Integrated Services Router - All All All
Hardware Cisco 1100 Integrated Services Router - All All All
Hardware Cisco 1101-4p Integrated Services Router - All All All
Hardware Cisco 1101 Integrated Services Router - All All All
Hardware Cisco 1109-2p Integrated Services Router - All All All
Hardware Cisco 1109-4p Integrated Services Router - All All All
Hardware Cisco 1109 Integrated Services Router - All All All
Hardware Cisco 1111x-8p Integrated Services Router - All All All
Hardware Cisco 1111x Integrated Services Router - All All All
Hardware Cisco 111x Integrated Services Router - All All All
Hardware Cisco 1120 Integrated Services Router - All All All
Hardware Cisco 1160 Integrated Services Router - All All All
Hardware Cisco 6300 Series Access Points - All All All
Hardware Cisco Aironet 1540 - All All All
Hardware Cisco Aironet 1542d - All All All
Hardware Cisco Aironet 1542i - All All All
Hardware Cisco Aironet 1560 - All All All
Hardware Cisco Aironet 1562d - All All All
Hardware Cisco Aironet 1562e - All All All
Hardware Cisco Aironet 1562i - All All All
Hardware Cisco Aironet 1800 - All All All
Hardware Cisco Aironet 1800i - All All All
Hardware Cisco Aironet 1810 - All All All
Hardware Cisco Aironet 1810w - All All All
Hardware Cisco Aironet 1815 - All All All
Hardware Cisco Aironet 1815i - All All All
Hardware Cisco Aironet 1830 - All All All
Hardware Cisco Aironet 1830e - All All All
Hardware Cisco Aironet 1830i - All All All
Hardware Cisco Aironet 1840 - All All All
Hardware Cisco Aironet 1850 - All All All
Hardware Cisco Aironet 1850e - All All All
Hardware Cisco Aironet 1850i - All All All
Hardware Cisco Aironet 2800 - All All All
Hardware Cisco Aironet 2800e - All All All
Hardware Cisco Aironet 2800i - All All All
Hardware Cisco Aironet 3800 - All All All
Hardware Cisco Aironet 3800e - All All All
Hardware Cisco Aironet 3800i - All All All
Hardware Cisco Aironet 3800p - All All All
Hardware Cisco Aironet 4800 - All All All
Operating System Cisco Aironet Access Point Software All All All All
Operating System Cisco Aironet Access Point Software 17.2 All All All
Operating System Cisco Aironet Access Point Software 17.3 All All All
Hardware Cisco Catalyst 9100 - All All All
Hardware Cisco Catalyst 9105 - All All All
Hardware Cisco Catalyst 9105axi - All All All
Hardware Cisco Catalyst 9105axw - All All All
Hardware Cisco Catalyst 9115 - All All All
Hardware Cisco Catalyst 9115axe - All All All
Hardware Cisco Catalyst 9115axi - All All All
Hardware Cisco Catalyst 9115 Ap - All All All
Hardware Cisco Catalyst 9117 - All All All
Hardware Cisco Catalyst 9117axi - All All All
Hardware Cisco Catalyst 9117 Ap - All All All
Hardware Cisco Catalyst 9120 - All All All
Hardware Cisco Catalyst 9120axe - All All All
Hardware Cisco Catalyst 9120axi - All All All
Hardware Cisco Catalyst 9120axp - All All All
Hardware Cisco Catalyst 9120 Ap - All All All
Hardware Cisco Catalyst 9124 - All All All
Hardware Cisco Catalyst 9124axd - All All All
Hardware Cisco Catalyst 9124axi - All All All
Hardware Cisco Catalyst 9130 - All All All
Hardware Cisco Catalyst 9130axe - All All All
Hardware Cisco Catalyst 9130axi - All All All
Hardware Cisco Catalyst 9130 Ap - All All All
Hardware Cisco Catalyst Iw6300 - All All All
Hardware Cisco Catalyst Iw6300 Ac - All All All
Hardware Cisco Catalyst Iw6300 Dc - All All All
Hardware Cisco Catalyst Iw6300 Dcw - All All All
Hardware Cisco Isr 1100 - All All All
Hardware Cisco Isr 1100-4g/6g - All All All
Hardware Cisco Isr 1100-4p - All All All
Hardware Cisco Isr 1100-8p - All All All
Hardware Cisco Isr 1101 - All All All
Hardware Cisco Isr 1101-4p - All All All
Hardware Cisco Isr 1109 - All All All
Hardware Cisco Isr 1109-2p - All All All
Hardware Cisco Isr 1109-4p - All All All
Hardware Cisco Isr 1111x - All All All
Hardware Cisco Isr 1111x-8p - All All All
Hardware Cisco Isr 111x - All All All
Hardware Cisco Isr 1120 - All All All
Hardware Cisco Isr 1160 - All All All

References

ReferenceSourceLinkTags
Cisco Aironet Access Points WLAN Control Protocol Packet Buffer Leak Denial of Service Vulnerability CISCO tools.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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