CVE-2022-51017

PocketMine-MP versions before 3.26.5 and 4.0.5 fail to validate the length of skin data fields submitted by players, allowing uncapped values to exceed the 32767 byte TAGString limit. Attackers can submit oversized skin data fields like skinID or geometryName to trigger exceptions during NBT data...

CVE-2022-51017 PocketMine-MP before 3.26.5 and 4.0.5 Denial of Service via Skin Data

PocketMine-MP versions before 3.26.5 and 4.0.5 fail to validate the length of skin data fields submitted by players, allowing uncapped values to exceed the 32767 byte TAGString limit. Attackers can submit oversized skin data fields like skinID or geometryName to trigger exceptions during NBT data...

CVE-2022-51017: Improper Input Validation

PocketMine-MP versions before 3.26.5 and 4.0.5 fail to validate the length of skin data fields submitted by players, allowing uncapped values to exceed the 32767 byte TAGString limit. Attackers can submit oversized skin data fields like skinID or geometryName to trigger exceptions during NBT data...

WS-2022-0004

Some skin data fields e.g. skinID, geometryName are not capped in length. These fields are typically saved in the NBT data of a player when the player quits the server, or during an autosave. This is problematic due to the 32767 byte limit on "TAGString"s. If any of these fields exceeds 32767...

GHSA-P62J-HRXM-XCXF Book page text, count, and author/title length is not limited in PocketMine-MP

Impact Players can fill book pages with as many characters as they like; the server does not check this. In addition, the maximum of 50 pages is also not enforced, meaning that players can create "book bombs". This causes a variety of problems: - Oversized NBT on the wire costing excess bandwidth...