CVE-2021-34740

HIGH

7.4

Description

A 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.

CVE Details

CVSS v3.1 Score7.4

SeverityHIGH

CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack VectorADJACENT_NETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/23/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

cisco:1100-4g\/6g_integrated_services_routercisco:1100-4p_integrated_services_routercisco:1100-8p_integrated_services_routercisco:1100_integrated_services_routercisco:1101-4p_integrated_services_routercisco:1101_integrated_services_routercisco:1109-2p_integrated_services_routercisco:1109-4p_integrated_services_routercisco:1109_integrated_services_routercisco:1111x-8p_integrated_services_routercisco:1111x_integrated_services_routercisco:111x_integrated_services_routercisco:1120_integrated_services_routercisco:1160_integrated_services_routercisco:6300_series_access_pointscisco:aironet_1540cisco:aironet_1542dcisco:aironet_1542icisco:aironet_1560cisco:aironet_1562dcisco:aironet_1562ecisco:aironet_1562icisco:aironet_1800cisco:aironet_1800icisco:aironet_1810cisco:aironet_1810wcisco:aironet_1815cisco:aironet_1815icisco:aironet_1830cisco:aironet_1830ecisco:aironet_1830icisco:aironet_1840cisco:aironet_1850cisco:aironet_1850ecisco:aironet_1850icisco:aironet_2800cisco:aironet_2800ecisco:aironet_2800icisco:aironet_3800cisco:aironet_3800ecisco:aironet_3800icisco:aironet_3800pcisco:aironet_4800cisco:aironet_access_point_softwarecisco:catalyst_9100cisco:catalyst_9105cisco:catalyst_9105axicisco:catalyst_9105axwcisco:catalyst_9115cisco:catalyst_9115_apcisco:catalyst_9115axecisco:catalyst_9115axicisco:catalyst_9117cisco:catalyst_9117_apcisco:catalyst_9117axicisco:catalyst_9120cisco:catalyst_9120_apcisco:catalyst_9120axecisco:catalyst_9120axicisco:catalyst_9120axpcisco:catalyst_9124cisco:catalyst_9124axdcisco:catalyst_9124axicisco:catalyst_9130cisco:catalyst_9130_apcisco:catalyst_9130axecisco:catalyst_9130axicisco:catalyst_iw6300cisco:catalyst_iw6300_accisco:catalyst_iw6300_dccisco:catalyst_iw6300_dcw

Weaknesses (CWE)

CWE-401CWE-401

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL(psirt@cisco.com)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.