CVE-2024-26455 Use after free in n/a

High 7.5 Published Updated

A use-after-free flaw in Fluent Bit allows attackers to potentially execute arbitrary code or cause a denial of service.

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

What is CVE-2024-26455?

CVE-2024-26455 is a high-severity use after free vulnerability in n/a, published on 26 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

fluent-bit 2.2.2 contains a Use-After-Free vulnerability in /fluent-bit/plugins/custom_calyptia/calyptia.c.

Weakness: CWE-416

Which versions are affected by CVE-2024-26455?

1 open source package ship an affected version, including fluent-bit. It affects 1 product.

PackageAffectedFixed in
fluent-bit BitnamiFrom 2.2.22.2.3

Products include Treasuredata Fluent Bit.

How do I fix CVE-2024-26455?

Upgrade fluent-bit to 2.2.3 or later.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2024-26455 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-26455 exists.

Sources

Also known as AZL-35449, AZL-35472, BIT-fluent-bit-2024-26455, GHSA-7xfv-2p7x-fhmv.

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