CVE-2015-8125 Symfony Vulnerable to Timing Attack

High 7.5 Published Updated

Remote attackers can bypass security features like RememberMe and CSRF protection via timing attacks in the Symfony Security and Form components.

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

What is CVE-2015-8125?

CVE-2015-8125 is a high-severity vulnerability in Sensiolabs Symfony, published on 7 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Symfony 2.3.x before 2.3.35, 2.6.x before 2.6.12, and 2.7.x before 2.7.7 might allow remote attackers to have unspecified impact via a timing attack involving the (1) Symfony/Component/Security/Http/RememberMe/PersistentTokenBasedRememberMeServices or (2) Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener class in the Symfony Security Component, or (3) legacy CSRF implementation from the Symfony/Component/Form/Extension/Csrf/CsrfProvider/DefaultCsrfProvider class in the Symfony Form component.

Which versions are affected by CVE-2015-8125?

22 open source packages ship an affected version, including symfony/form, symfony/security and symfony/security-http. It affects 1 product.

PackageAffectedFixed in
symfony/form PackagistFrom 2.3.02.3.35
symfony/form PackagistFrom 2.3.02.3.35
symfony/form PackagistFrom 2.4.02.6.12
symfony/form PackagistFrom 2.4.02.6.12
symfony/form PackagistFrom 2.7.02.7.7
symfony/form PackagistFrom 2.7.02.7.7
16 more packages
symfony/security PackagistFrom 2.3.02.3.35
symfony/security PackagistFrom 2.3.02.3.35
symfony/security PackagistFrom 2.4.02.6.12
symfony/security PackagistFrom 2.4.02.6.12
symfony/security PackagistFrom 2.7.02.7.7
symfony/security PackagistFrom 2.7.02.7.7
symfony/security-http PackagistFrom 2.4.02.6.12
symfony/security-http PackagistFrom 2.4.02.6.12
symfony/security-http PackagistFrom 2.7.02.7.7
symfony/security-http PackagistFrom 2.7.02.7.7
symfony/symfony PackagistFrom 2.3.02.3.35
symfony/symfony PackagistFrom 2.3.02.3.35
symfony/symfony PackagistFrom 2.4.02.6.12
symfony/symfony PackagistFrom 2.4.02.6.12
symfony/symfony PackagistFrom 2.7.02.7.7
symfony/symfony PackagistFrom 2.7.02.7.7

Products include Sensiolabs Symfony.

How do I fix CVE-2015-8125?

Upgrade symfony/form to a fixed version for your release line: 2.3.35, 2.6.12 or 2.7.7.

Is CVE-2015-8125 being exploited?

There is no known exploitation of CVE-2015-8125 in the wild and no public exploit code.

All Sensiolabs Symfony vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-8125, GHSA-g97c-jfx6-xvxh.

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