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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2020-11053— Open Redirect in OAuth2 Proxy

Quick assessment

Affected
OAuth2 Proxy OAuth2 Proxy
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.

OAuth2 Proxy是一款能够提供与Google、Github或其他提供商进行身份验证的反向代理。 OAuth2 Proxy 5.1.1之前版本中存在输入验证错误漏洞。攻击者可借助特制的重定向URL利用该漏洞绕过验证并将用户重定向到所提供的任意URL上。

CVSS 7.1 · High EPSS 0.79% · P56

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2020-11053

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Open Redirect in OAuth2 Proxy
Source: CVE Program / CVE List V5
Vulnerability Description
In OAuth2 Proxy before 5.1.1, there is an open redirect vulnerability. Users can provide a redirect address for the proxy to send the authenticated user to at the end of the authentication flow. This is expected to be the original URL that the user was trying to access. This redirect URL is checked within the proxy and validated before redirecting the user to prevent malicious actors providing redirects to potentially harmful sites. However, by crafting a redirect URL with HTML encoded whitespace characters the validation could be bypassed and allow a redirect to any URL provided. This has been patched in 5.1.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
OAuth2 Proxy 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OAuth2 Proxy是一款能够提供与Google、Github或其他提供商进行身份验证的反向代理。 OAuth2 Proxy 5.1.1之前版本中存在输入验证错误漏洞。攻击者可借助特制的重定向URL利用该漏洞绕过验证并将用户重定向到所提供的任意URL上。
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
OAuth2 Proxy OAuth2 Proxy < 5.1.1 -

II. Public POCs for CVE-2020-11053

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2020-11053

请登录查看更多情报信息。

Vendor Advisories for CVE-2020-11053 (1)

IV. Related Vulnerabilities

Same product: OAuth2 Proxy
Same vendor: OAuth2 Proxy
Same weakness: CWE-601