GHSA-f3q4-ggfp-jv34 Adyen APIs Library for Python timing attack vulnerability

Not scored Published

Attackers can bypass HMAC signature validation in Adyen Python library via timing attacks, allowing unauthorized notification processing.

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

What is GHSA-f3q4-ggfp-jv34?

GHSA-f3q4-ggfp-jv34 is a vulnerability in Adyen, published on 30 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Adyen has utility methods for validating notification HMAC signatures. The is_valid_hmac and is_valid_hmac_notification methods are vulnerable to a timing attack, you should compare the hash of the HMACs instead.

Which versions are affected by GHSA-f3q4-ggfp-jv34?

2 open source packages ship an affected version, including Adyen and adyen.

PackageAffectedFixed in
Adyen PyPIFrom 2.2.07.1.0
adyen PyPIFrom 2.2.07.1.0

How do I fix GHSA-f3q4-ggfp-jv34?

Upgrade Adyen to 7.1.0 or later.

Is GHSA-f3q4-ggfp-jv34 being exploited?

There is no known exploitation of GHSA-f3q4-ggfp-jv34 in the wild and no public exploit code.

Sources

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