Description
10up Distributor before 2.3.2 contains a PHP object injection vulnerability that allows Contributor-level users to instantiate PHP objects by double unserializing distributed post meta. Attackers can store a serialized PHP string as meta, which set_meta() in includes/utils.php unserializes on the destination site, storing attacker-defined objects whose impact depends on loaded gadget classes.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 10up | Distributor | < 2.3.2 | 2.3.2 |
References
- GitHub Security Advisory (GHSA-wm53-9j85-ph6h) vendor-advisory
- https://github.com/10up/distributor/blob/2.3.1/includes/utils.php#L192-L200 technical-description
- https://github.com/10up/distributor/commit/7c57edb774d80534885ca6f2c46b95d333de6e5a patch
- Distributor 2.3.2 Release Notes release-notes
- VulnCheck Advisory: 10up Distributor before 2.3.2 PHP Object Injection via set_meta() third-party-advisory