SAML Single Sign On – SSO Login: authentication bypass
SAML Single Sign On – SSO Login
Authentication bypass in the SAML Single Sign On – SSO Login component. Threat level: High (CVSS 7.5).
Who is affected
This vulnerability affects: SAML Single Sign On – SSO Login. If you use this component on your site, check the version and update it as soon as possible.
How dangerous
Rating: High, CVSS 7.5 out of 10. It is worth acting before the flaw is exploited.
What this flaw is
Authentication bypass lets an attacker gain access or privileges without knowing the password, by exploiting a flaw in the login mechanism.
The attacker enters the panel like a normal administrator, without the usual signs of a breach, which makes it hard to detect.
Score breakdown (CVSS vector)
What the CVSS 7.5 rating means in practice:
- The attack can be carried out remotely, over the internet.
- No login or account required.
- Requires user action (e.g. clicking a link).
- At risk: data confidentiality, integrity (data can be altered), site availability.
Weakness class: CWE-287.
What to do
- Update the vulnerable component (SAML Single Sign On – SSO Login) to the latest version.
- If a patch is not out yet, temporarily disable the vulnerable element.
- Check whether the site has already been attacked: unusual files, new administrator accounts, redirects.
- Make a backup before you start making changes.
Does this flaw affect your site?
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