CVE-2020-4037 - In OAuth2 Proxy from version 5.1.1 and less than version 6.0.0, users can provide a redirect address

CVE-2020-4037

Summary

In OAuth2 Proxy from version 5.1.1 and less than version 6.0.0, 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. This has been fixed in version 6.0.0.

References

Vulnerable Configurations

cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:5.1.1:*:*:*:*:*:*:*

CVSS

Base:	5.8 (as of 07-07-2020 - 18:40)
Impact:
Exploitability:

CWE

CWE-601

CAPEC

Access

Vector	Complexity	Authentication
NETWORK	MEDIUM	NONE

Impact

Confidentiality	Integrity	Availability
PARTIAL	PARTIAL	NONE

cvss-vector via4

AV:N/AC:M/Au:N/C:P/I:P/A:N

refmap via4

confirm	https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-5m6c-jp6f-2vcv
misc	https://github.com/oauth2-proxy/oauth2-proxy/commit/ee5662e0f5001d76ec76562bb605abbd07c266a2

Last major update

07-07-2020 - 18:40

Published

29-06-2020 - 20:15

Last modified

07-07-2020 - 18:40