CVE-2017-12849 Silverstripe CMS User Enumeration
Remote attackers can enumerate valid users in SilverStripe CMS by analyzing timing discrepancies in login and password reset responses.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-12849?
CVE-2017-12849 is a medium-severity vulnerability in Silverstripe Silverstripe, published on 12 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Response discrepancy in the login and password reset forms in SilverStripe CMS before 3.5.5 and 3.6.x before 3.6.1 allows remote attackers to enumerate users via timing attacks.
Weakness: CWE-200
Which versions are affected by CVE-2017-12849?
4 open source packages ship an affected version, including silverstripe/cms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
silverstripe/cms Packagist | All versions | 3.5.5 |
silverstripe/cms Packagist | All versions | 3.5.5 |
silverstripe/cms Packagist | From 3.6 | 3.6.1 |
silverstripe/cms Packagist | From 3.6 | 3.6.1 |
Products include Silverstripe Silverstripe.
How do I fix CVE-2017-12849?
Upgrade silverstripe/cms to a fixed version for your release line: 3.5.5 or 3.6.1.
Is CVE-2017-12849 being exploited?
There is no known exploitation of CVE-2017-12849 in the wild and no public exploit code.
Other vulnerabilities in Silverstripe Silverstripe
Sources
Also known as GHSA-fwhr-g5r4-xgxf.