SS-2015-012: External redirection risk in Security?ReturnURL
- Medium (?)
- Versions Affected:
- 3.0.13 and below, 3.1.0 to 3.1.13-rc1
- Versions Fixed:
- 3.0.14, 3.1.13
- Release Date:
A vulnerability has been found in the SilverStripe framework where a login url can be potentially redirected to an external site.
For example, the url http://www.my-silverstripe-site.com/Security/login?BackURL=/\attacker-site.com will redirect successful logins to the page http://attacker-site.com. If that website were set up to look identical to the first with "login failed" then the user will likely just enter their user/pass again.
Credit to Matt Lang for reporting this issue.