CVE-2021-34740

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-34740
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.

7.4 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 4.0

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

6.1 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:A/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 6.5 / Impact : 6.9

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References
Link Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL Vendor Advisory
Configurations

Configuration 1 (hide)

AND
OR cpe:2.3:o:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:aironet_access_point_software:17.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:aironet_access_point_software:17.3:*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:6300_series_access_points:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1542d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1542i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1560:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1562d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1562e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1562i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1810:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1810w:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1815:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1815i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1830:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1830e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1830i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1840:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1850:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1850e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1850i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_4800:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9105:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9105axi:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9105axw:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9115:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9115_ap:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9115axe:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9115axi:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9117:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9117_ap:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9117axi:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9120_ap:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9120axe:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9120axi:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9120axp:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9124:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9124axd:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9124axi:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9130:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9130_ap:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9130axe:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_9130axi:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_iw6300:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_iw6300_ac:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_iw6300_dc:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:catalyst_iw6300_dcw:-:*:*:*:*:*:*:*
History

21 Nov 2024, 06:11

Type Values Removed Values Added
References () https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL - Vendor Advisory () https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL - Vendor Advisory

22 May 2023, 18:57

Type Values Removed Values Added
CPE cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*		 cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
First Time Cisco 1100-4p Integrated Services Router
Cisco 1109-4p Integrated Services Router
Cisco 1111x-8p Integrated Services Router
Cisco 1111x Integrated Services Router
Cisco 1109 Integrated Services Router
Cisco 1100-8p Integrated Services Router
Cisco 1100-4g\/6g Integrated Services Router
Cisco 1160 Integrated Services Router
Cisco 1120 Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 1109-2p Integrated Services Router
Cisco 1101 Integrated Services Router
Cisco 111x Integrated Services Router
Cisco 1101-4p Integrated Services Router
Information

Published : 2021-09-23 03:15

Updated : 2024-11-21 06:11

NVD link : CVE-2021-34740

Mitre link : CVE-2021-34740

CVE.ORG link : CVE-2021-34740

JSON object : View

Products Affected

cisco

  • catalyst_iw6300_dc
  • aironet_3800
  • aironet_1830i
  • aironet_2800e
  • catalyst_9100
  • catalyst_9105axw
  • catalyst_9124axd
  • 1160_integrated_services_router
  • 6300_series_access_points
  • aironet_access_point_software
  • 1101_integrated_services_router
  • catalyst_9120_ap
  • aironet_1562i
  • catalyst_9130axe
  • aironet_1850e
  • catalyst_9115axe
  • aironet_1542d
  • 1100-4p_integrated_services_router
  • aironet_1810
  • catalyst_9120axp
  • catalyst_9105axi
  • catalyst_9115axi
  • catalyst_9130axi
  • aironet_1840
  • 1100_integrated_services_router
  • aironet_3800e
  • catalyst_9117
  • aironet_2800
  • aironet_1830e
  • aironet_1800i
  • aironet_1830
  • catalyst_9130_ap
  • aironet_1815
  • aironet_3800i
  • catalyst_9115
  • catalyst_9124axi
  • aironet_1850
  • aironet_1562e
  • catalyst_9105
  • aironet_1850i
  • catalyst_iw6300_ac
  • catalyst_9120axi
  • catalyst_9124
  • 1109_integrated_services_router
  • aironet_3800p
  • 1100-8p_integrated_services_router
  • catalyst_9130
  • aironet_4800
  • 1111x-8p_integrated_services_router
  • catalyst_iw6300
  • aironet_1540
  • aironet_1562d
  • aironet_1800
  • 1101-4p_integrated_services_router
  • aironet_1560
  • 1109-2p_integrated_services_router
  • catalyst_9120axe
  • 111x_integrated_services_router
  • aironet_1815i
  • catalyst_9115_ap
  • catalyst_iw6300_dcw
  • catalyst_9120
  • 1109-4p_integrated_services_router
  • aironet_1542i
  • aironet_1810w
  • 1100-4g\/6g_integrated_services_router
  • 1111x_integrated_services_router
  • catalyst_9117axi
  • aironet_2800i
  • catalyst_9117_ap
  • 1120_integrated_services_router
CWE
CWE-401

Missing Release of Memory after Effective Lifetime