CVE-2021-34740
"Cisco Aironet AP WLAN Control Protocol Buffer Leak DOS"
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.
INFO
Published Date :
Sept. 23, 2021, 3:15 a.m.
Last Modified :
Nov. 7, 2023, 3:36 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-34740
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-34740.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-34740 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-34740 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V3 Cisco Systems, Inc. AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1100-4g/6g:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-4g/6g_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 22, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:* OR *cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Oct. 14, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrL Vendor Advisory Added CWE NIST CWE-401 Added CPE Configuration AND OR *cpe:2.3:o:cisco:aironet_access_point_software:*:*:*:*:*:*:*:* versions from (including) 8.10.0 up to (excluding) 8.10.162.0 *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: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:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-34740 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-34740
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.24744
percentile