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CVE-2021-1271— Cisco Web Security Appliance Stored Cross-Site Scripting Vulnerability

Quick assessment

Affected
Cisco Cisco Web Security Appliance (WSA)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Web Security Appliance（WSA）是美国思科（Cisco）公司的一款Web安全设备。该设备提供基于SaaS的访问控制、实时网络报告和追踪、制定安全策略等功能。AsyncOS Software是使用在其中的一套操作系统。 Cisco Web Security Appliance 的 Cisco AsyncOS 存在跨站脚本漏洞，该漏洞基于web的管理界面没有正确地验证用户提供的输入。攻击者可利用该漏洞在上下文中执行任意脚本代码。

CVSS 4.8 · Medium EPSS 0.80% · P56
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I. Basic Information for CVE-2021-1271

Vulnerability Information
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Vulnerability Title
Cisco Web Security Appliance Stored Cross-Site Scripting Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the web-based management interface of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface of an affected device. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by inserting malicious data into a specific data field in an affected interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Web Security Appliance 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Web Security Appliance（WSA）是美国思科（Cisco）公司的一款Web安全设备。该设备提供基于SaaS的访问控制、实时网络报告和追踪、制定安全策略等功能。AsyncOS Software是使用在其中的一套操作系统。 Cisco Web Security Appliance 的 Cisco AsyncOS 存在跨站脚本漏洞，该漏洞基于web的管理界面没有正确地验证用户提供的输入。攻击者可利用该漏洞在上下文中执行任意脚本代码。
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 Web Security Appliance (WSA) n/a -

II. Public POCs for CVE-2021-1271

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III. Intelligence Information for CVE-2021-1271

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Vendor Advisories for CVE-2021-1271 (1)

Same Patch Batch · Cisco · 2021-01-20 · 58 CVEs total

CVE-2021-1138 9.8 CRITICAL Cisco Smart Software Manager Satellite Web UI Command Injection Vulnerabilities
CVE-2021-1139 9.8 CRITICAL Cisco Smart Software Manager Satellite Web UI Command Injection Vulnerabilities
CVE-2021-1140 9.8 CRITICAL Cisco Smart Software Manager Satellite Web UI Command Injection Vulnerabilities
CVE-2021-1141 9.8 CRITICAL Cisco Smart Software Manager Satellite Web UI Command Injection Vulnerabilities
CVE-2021-1142 9.8 CRITICAL Cisco Smart Software Manager Satellite Web UI Command Injection Vulnerabilities
CVE-2021-1264 9.6 CRITICAL Cisco DNA Center Command Runner Command Injection Vulnerability
CVE-2021-1304 8.8 HIGH Cisco SD-WAN vManage Authorization Bypass Vulnerabilities
CVE-2021-1305 8.8 HIGH Cisco SD-WAN vManage Authorization Bypass Vulnerabilities
CVE-2021-1247 8.8 HIGH Cisco Data Center Network Manager SQL Injection Vulnerabilities
CVE-2021-1248 8.8 HIGH Cisco Data Center Network Manager SQL Injection Vulnerabilities
CVE-2021-1272 8.8 HIGH Cisco Data Center Network Manager Server-Side Request Forgery Vulnerability
CVE-2021-1302 8.8 HIGH Cisco SD-WAN vManage Authorization Bypass Vulnerabilities
CVE-2021-1279 8.6 HIGH Cisco SD-WAN Denial of Service Vulnerabilities
CVE-2021-1278 8.6 HIGH Cisco SD-WAN Denial of Service Vulnerabilities
CVE-2021-1241 8.6 HIGH Cisco SD-WAN Denial of Service Vulnerabilities
CVE-2021-1273 8.6 HIGH Cisco SD-WAN Denial of Service Vulnerabilities
CVE-2021-1274 8.6 HIGH Cisco SD-WAN Denial of Service Vulnerabilities
CVE-2021-1280 7.8 HIGH Cisco Advanced Malware Protection for Endpoints and Immunet for Windows DLL Hijacking Vuln
CVE-2021-1276 7.5 HIGH Cisco Data Center Network Manager Certificate Validation Vulnerabilities
CVE-2021-1277 7.5 HIGH Cisco Data Center Network Manager Certificate Validation Vulnerabilities

Showing top 20 of 58 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco Web Security Appliance (WSA)
Same vendor: Cisco
Same weakness: CWE-79

V. Comments for CVE-2021-1271

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