GHSA-2x4v-g8cx-jxrq Login timing attack in ibexa/core

Not scored Published

Attackers can enumerate valid user accounts via timing side-channels in Ibexa DXP, compromising user privacy.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is GHSA-2x4v-g8cx-jxrq?

GHSA-2x4v-g8cx-jxrq is a vulnerability in ibexa/core, published on 2 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Ibexa DXP is using random execution time to hinder timing attacks against user accounts, a method of discovering whether a given account exists in a system without knowing its password, thus affecting privacy. This implementation was found to not be good enough in some situations. The fix replaces this with constant time functionality, configured in the new security.yml parameter 'ibexa.security.authentication.constant_auth_time'. It will log a warning if the constant time is exceeded. If this happens the setting should be increased.

Which versions are affected by GHSA-2x4v-g8cx-jxrq?

4 open source packages ship an affected version, including ibexa/core.

PackageAffectedFixed in
ibexa/core PackagistFrom 4.0.04.0.7
ibexa/core PackagistFrom 4.0.04.0.7
ibexa/core PackagistFrom 4.1.04.1.4
ibexa/core PackagistFrom 4.1.04.1.4

How do I fix GHSA-2x4v-g8cx-jxrq?

Upgrade ibexa/core to a fixed version for your release line: 4.0.7 or 4.1.4.

Is GHSA-2x4v-g8cx-jxrq being exploited?

There is no known exploitation of GHSA-2x4v-g8cx-jxrq in the wild and no public exploit code.

Sources

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