Description
PocketMine-MP before 3.26.5 and 4.0.x before 4.0.5 does not limit book page text length, page count, or author/title length. A player who obtains a writable book can create oversized NBT ('book bombs'), causing excess bandwidth consumption and server crashes (exceeding the 1 MB chunk size limit when saving region-based worlds in PM3, or exceeding the 32 KiB TAG_String limit in PM4).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pmmp | PocketMine-MP | 3.0.0 – < 3.26.5, 4.0.0 – < 4.0.5 | 3.26.5 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | pocketmine/pocketmine-mp | < 3.26.5 | 3.26.5 | GHSA-p62j-hrxm-xcxf |
| Packagist | pocketmine/pocketmine-mp | >= 4.0.0, < 4.0.5 | 4.0.5 | GHSA-p62j-hrxm-xcxf |
References
- GitHub Security Advisory (GHSA-p62j-hrxm-xcxf) vendor-advisory
- VulnCheck Advisory: PocketMine-MP before 3.26.5 Input Validation via Book Pages third-party-advisory