Active Record RCE bug with Serialized Columns
Critical severity
GitHub Reviewed
Published
Jul 12, 2022
to the GitHub Advisory Database
•
Updated Feb 2, 2023
Package
Affected versions
>= 7.0.0, <= 7.0.3
>= 6.1.0, <= 6.1.6
>= 6.0.0, <= 6.0.5
<= 5.2.8
Patched versions
7.0.3.1
6.1.6.1
6.0.5.1
5.2.8.1
Description
Published to the GitHub Advisory Database
Jul 12, 2022
Reviewed
Jul 12, 2022
Published by the National Vulnerability Database
Dec 5, 2022
Last updated
Feb 2, 2023
When serialized columns that use YAML (the default) are deserialized, Rails uses YAML.unsafe_load to convert the YAML data in to Ruby objects. If an attacker can manipulate data in the database (via means like SQL injection), then it may be possible for the attacker to escalate to an RCE.
There are no feasible workarounds for this issue, but other coders (such as JSON) are not impacted.
References