CVE-2017-4963 Auth bypass in Cloud Foundry Foundation

High 8.1 Published Updated

Attackers can hijack user sessions in Cloud Foundry UAA when configured with external SAML or OIDC identity providers.

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-2017-4963?

CVE-2017-4963 is a high-severity authentication bypass vulnerability in Cloud Foundry Foundation, published on 13 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Cloud Foundry Foundation Cloud Foundry release v252 and earlier versions, UAA stand-alone release v2.0.0 - v2.7.4.12 & v3.0.0 - v3.11.0, and UAA bosh release v26 & earlier versions. UAA is vulnerable to session fixation when configured to authenticate against external SAML or OpenID Connect based identity providers.

Weakness: CWE-384

Which versions are affected by CVE-2017-4963?

It affects 3 products.

Products include Pivotal Software Cloud Foundry Cf-Release, Pivotal Software Cloud Foundry Uaa, Pivotal Software Cloud Foundry Uaa-Release.

How do I fix CVE-2017-4963?

No fix has been published for CVE-2017-4963 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-2017-4963 being exploited?

There is no known exploitation of CVE-2017-4963 in the wild and no public exploit code.

Sources

Also known as GHSA-v3fx-g84p-g838.

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