Summary
An issue on Coder's login page allows attackers to craft a Coder URL that when clicked by a logged in user could redirect them to a website the attacker controls, e.g. https://google.com.
Details
On the login page, Coder checks for the presence of a redirect query parameter. On successful login, the user would be redirected to the location of the parameter. Improper sanitization allows attackers to specify a URL outside of the Coder application to redirect users to.
Impact
Coder users could potentially be redirected to a untrusted website if tricked into clicking a URL crafted by the attacker. Coder authentication tokens are not leaked to the resulting website.
To check if your deployment is vulnerable, visit the following URL for your Coder deployment:
https://<coder url>/login?redirect=https%3A%2F%2Fcoder.com%2Fdocs
Patched Versions
This vulnerability is remedied in
All versions prior to 2.3.1 are not affected.
Thanks
References
GHSA-wcx9-ccpj-hx3c
69c1d98
Summary
An issue on Coder's login page allows attackers to craft a Coder URL that when clicked by a logged in user could redirect them to a website the attacker controls, e.g. https://google.com.
Details
On the login page, Coder checks for the presence of a
redirectquery parameter. On successful login, the user would be redirected to the location of the parameter. Improper sanitization allows attackers to specify a URL outside of the Coder application to redirect users to.Impact
Coder users could potentially be redirected to a untrusted website if tricked into clicking a URL crafted by the attacker. Coder authentication tokens are not leaked to the resulting website.
To check if your deployment is vulnerable, visit the following URL for your Coder deployment:
https://<coder url>/login?redirect=https%3A%2F%2Fcoder.com%2FdocsPatched Versions
This vulnerability is remedied in
All versions prior to 2.3.1 are not affected.
Thanks
References
GHSA-wcx9-ccpj-hx3c
69c1d98