Yocto Bitbake Toaster RCE via Crafted HTTP (before 2.6.2, Yocto 4.3.1)
CVE-2024-25626 Published on February 19, 2024
Yocto Project Security Advisory - BitBake/Toaster
Yocto Project is an open source collaboration project that helps developers create custom Linux-based systems regardless of the hardware architecture. In Yocto Projects Bitbake before 2.6.2 (before and included Yocto Project 4.3.1), with the Toaster server (included in bitbake) running, missing input validation allows an attacker to perform a remote code execution in the server's shell via a crafted HTTP request. Authentication is not necessary. Toaster server execution has to be specifically run and is not the default for Bitbake command line builds, it is only used for the Toaster web based user interface to Bitbake. The fix has been backported to the bitbake included with Yocto Project 5.0, 3.1.31, 4.0.16, and 4.3.2.
Vulnerability Analysis
CVE-2024-25626 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2024-25626 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2024-25626
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Affected Versions
yoctoproject poky:- Version >= 4.3.0, < 4.3.2 is affected.
- Version >= 4.0.0, < 4.0.16 is affected.
- Version < 3.1.31 is affected.
- Version 4.3.0 and below 4.3.2 is affected.
- Version 4.0.0 and below 4.0.16 is affected.
- Before 3.1.31 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.