CVE-2020-3273— Cisco Wireless LAN Controller 802.11 Generic Advertisement Service Denial of Service Vulnerability
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I. Basic Information for CVE-2020-3273
Vulnerability Information
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Vulnerability Title
Cisco Wireless LAN Controller 802.11 Generic Advertisement Service Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the 802.11 Generic Advertisement Service (GAS) frame processing function of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS). The vulnerability is due to incomplete input validation of the 802.11 GAS frames that are processed by an affected device. An attacker could exploit this vulnerability by sending a crafted 802.11 GAS frame over the air to an access point (AP), and that frame would then be relayed to the affected WLC. Also, an attacker with Layer 3 connectivity to the WLC could exploit this vulnerability by sending a malicious 802.11 GAS payload in a Control and Provisioning of Wireless Access Points (CAPWAP) packet to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Wireless LAN Controller Software 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Wireless LAN Controller（WLC）Software是美国思科（Cisco）公司的一套用于配置和管理WLC（无线局域网控制器）的软件。 Cisco WLC Software中的802.11 Generic Advertisement Service (GAS)帧处理功能存在缓冲区错误漏洞，该漏洞源于程序没有对802.11 GAS帧进行充分的验证。远程攻击者可通过向无线接入点发送特制的802.11 GAS帧利用该漏洞造成设备重新加载，导致拒绝服务。
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 Wireless LAN Controller (WLC) | n/a | - |
II. Public POCs for CVE-2020-3273
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-gas-dos-8FsE3AWHvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2020-3273
Same Patch Batch · Cisco · 2020-04-15 · 17 CVEs total
| CVE-2020-3161 | Cisco IP Phones Web Server Remote Code Execution and Denial of Service Vulnerability | |
| CVE-2020-3162 | Cisco IoT Field Network Director Denial of Service Vulnerability | |
| CVE-2020-3177 | Cisco Unified Communications Manager Path Traversal Vulnerability | |
| CVE-2020-3194 | Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulne | |
| CVE-2020-3239 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3240 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3243 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3247 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3248 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3249 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3250 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3251 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3252 | Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data | |
| CVE-2020-3260 | Cisco Aironet Series Access Points Client Packet Processing Denial of Service Vulnerabilit | |
| CVE-2020-3261 | Cisco Mobility Express Software Cross-Site Request Forgery Vulnerability | |
| CVE-2020-3262 | Cisco Wireless LAN Controller CAPWAP Denial of Service Vulnerability |
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V. Comments for CVE-2020-3273
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