CVE-2021-34740— Cisco Aironet Access Points WLAN Control Protocol Packet Buffer Leak Denial of Service Vulnerability
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I. Basic Information for CVE-2021-34740
Vulnerability Information
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Vulnerability Title
Cisco Aironet Access Points WLAN Control Protocol Packet Buffer Leak Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Aironet Access Points 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Aironet Access Points（aps）是美国思科（Cisco）公司的一款网络接入点设备。 Cisco Aironet Access Points 中存在缓冲区错误漏洞，该漏洞源于产品WLAN控制协议(WCP)实现不当导致无法正常处理意外的802.11数据。攻击者可通过该漏洞导致包缓冲区泄露或拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Aironet Access Point Software | n/a | - |
II. Public POCs for CVE-2021-34740
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-airo-wpa-pktleak-dos-uSTyGrLvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2021-34740
Same Patch Batch · Cisco · 2021-09-23 · 33 CVEs total
| CVE-2021-34770 | 10.0 CRITICAL | Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Exe |
| CVE-2021-1619 | 9.8 CRITICAL | Cisco IOS XE Software NETCONF and RESTCONF Authentication Bypass Vulnerability |
| CVE-2021-34727 | 9.8 CRITICAL | Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability |
| CVE-2021-1624 | 8.6 HIGH | Cisco IOS XE Software Rate Limiting Network Address Translation Denial of Service Vulnerab |
| CVE-2021-1622 | 8.6 HIGH | Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers Common Open Policy Servi |
| CVE-2021-1615 | 8.6 HIGH | Cisco Embedded Wireless Controller Software for Catalyst Access Points Denial of Service V |
| CVE-2021-1611 | 8.6 HIGH | Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers EoGRE Denial of Servic |
| CVE-2021-1565 | 8.6 HIGH | Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Servi |
| CVE-2021-34769 | 8.6 HIGH | Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Servi |
| CVE-2021-34768 | 8.6 HIGH | Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Servi |
| CVE-2021-1419 | 7.8 HIGH | Cisco Access Points SSH Management Privilege Escalation Vulnerability |
| CVE-2021-1623 | 7.7 HIGH | Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers Simple Network Managemen |
| CVE-2021-1620 | 7.7 HIGH | Cisco IOS and IOS XE Software IKEv2 AutoReconnect Feature Denial of Service Vulnerability |
| CVE-2021-34699 | 7.7 HIGH | Cisco IOS and IOS XE Software TrustSec CLI Parser Denial of Service Vulnerability |
| CVE-2021-1621 | 7.4 HIGH | Cisco IOS XE Software Interface Queue Wedge Denial of Service Vulnerability |
| CVE-2021-34767 | 7.4 HIGH | Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers IPv6 Denial of Service |
| CVE-2021-34714 | 7.4 HIGH | Multiple Cisco Operating Systems Unidirectional Link Detection Denial of Service Vulnerabi |
| CVE-2021-34703 | 6.8 MEDIUM | Cisco IOS and IOS XE Software Link Layer Discovery Protocol Denial of Service Vulnerabilit |
| CVE-2021-34729 | 6.7 MEDIUM | Cisco IOS XE SD-WAN Software Command Injection Vulnerability |
| CVE-2021-34725 | 6.7 MEDIUM | Cisco IOS XE SD-WAN Software Command Injection Vulnerability |
Showing top 20 of 33 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-34740
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