Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2019-1884— Cisco Web Security Appliance Web Proxy Denial of Service 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 WSA中的AsyncOS Software的Web代理功能存在输入验证错误漏洞，该漏洞源于程序没有对通过受影响设备所发送的HTTP/HTTPS请求中的字段进行充分地输入验证。远程攻击者可通过发送恶意的HTTP/HTTPS请求利用该漏洞造成流量处理

AI Predicted 6.5 Difficulty: Easy EPSS 1.51% · P74

Possible ATT&CK Techniques 1 AI

T1499.001 · OS Exhaustion Flood
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2019-1884

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Cisco Web Security Appliance Web Proxy Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation mechanisms for certain fields in HTTP/HTTPS requests sent through an affected device. A successful attacker could exploit this vulnerability by sending a malicious HTTP/HTTPS request through an affected device. An exploit could allow the attacker to force the device to stop processing traffic, resulting in a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Web Security Appliance AsyncOS Software 输入验证错误漏洞
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 WSA中的AsyncOS Software的Web代理功能存在输入验证错误漏洞，该漏洞源于程序没有对通过受影响设备所发送的HTTP/HTTPS请求中的字段进行充分地输入验证。远程攻击者可通过发送恶意的HTTP/HTTPS请求利用该漏洞造成流量处理
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) unspecified ~ 10.5.5-005 -

II. Public POCs for CVE-2019-1884

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2019-1884

请登录查看更多情报信息。

Same Patch Batch · Cisco · 2019-07-04 · 5 CVEs total

CVE-2019-1890 Cisco Nexus 9000 Series Fabric Switches ACI Mode Fabric Infrastructure VLAN Unauthorized A
CVE-2019-1889 Cisco Application Policy Infrastructure Controller REST API Privilege Escalation Vulnerabi
CVE-2019-1855 Cisco Jabber for Windows DLL Preloading Vulnerability
CVE-2019-1886 Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Web Security Appliance (WSA)
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1884

No comments yet

Leave a comment