CVE-2018-3822 Auth bypass in X-Pack Security
Attackers can impersonate legitimate users via SAML identifier suffix collisions if self-registration is enabled, requiring specific IdP configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-3822?
CVE-2018-3822 is a critical authentication bypass vulnerability in Elastic X-Pack Security, published on 30 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.
Which versions are affected by CVE-2018-3822?
It affects 1 product.
Products include Elastic X-Pack.
How do I fix CVE-2018-3822?
No fix has been published for CVE-2018-3822 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2018-3822 being exploited?
There is no known exploitation of CVE-2018-3822 in the wild and no public exploit code.
Other vulnerabilities in Elastic X-Pack Security
- CVE-2017-8448 Privilege escalation in Elastic X-Pack Alerting
- CVE-2017-8438 Privilege escalation in X-Pack Security
- CVE-2017-8450 Missing authorization in Elastic X-Pack Security
- CVE-2017-8447 Privilege escalation in Elastic X-Pack Security
- CVE-2017-8442 Information disclosure in Elasticsearch X-Pack Security
Sources
Also known as GHSA-8x5v-8988-73v9.