CVE-2019-13347 Auth bypass in n/a

High 7.5 Published Updated

Attackers can reactivate disabled accounts by browsing the site if specific SAML plugin settings are enabled, bypassing account deactivation controls.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-13347?

CVE-2019-13347 is a high-severity authentication bypass vulnerability in n/a, published on 13 Dec 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in the SAML Single Sign On (SSO) plugin for several Atlassian products affecting versions 3.1.0 through 3.2.2 for Jira and Confluence, versions 2.4.0 through 3.0.3 for Bitbucket, and versions 2.4.0 through 2.5.2 for Bamboo. It allows locally disabled users to reactivate their accounts just by browsing the affected Jira/Confluence/Bitbucket/Bamboo instance, even when the applicable configuration option of the plugin has been disabled ("Reactivate inactive users"). Exploiting this vulnerability requires an attacker to be authorized by the identity provider and requires that the plugin's configuration option "User Update Method" have the "Update from SAML Attributes" value.

Which versions are affected by CVE-2019-13347?

It affects 1 product.

Products include Atlassian Saml Single Sign On.

How do I fix CVE-2019-13347?

No fix has been published for CVE-2019-13347 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-2019-13347 being exploited?

There is no known exploitation of CVE-2019-13347 in the wild and no public exploit code.

Sources

Also known as GHSA-pq6q-vhr6-vqvj.

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