pmmp PocketMine-MP up to 4.23.0/5.3.0 identityPublicKey input validation

Summaryinfo

A vulnerability, which was classified as problematic, has been found in pmmp PocketMine-MP up to 4.23.0/5.3.0. This affects an unknown function. The manipulation of the argument identityPublicKey leads to input validation. This vulnerability is uniquely identified as CVE-2023-54355. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in pmmp PocketMine-MP up to 4.23.0/5.3.0. This issue affects an unknown functionality. The manipulation of the argument identityPublicKey with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

PocketMine-MP versions before 5.3.1 and 4.23.1 fail to validate that the identityPublicKey in LoginPacket uses the required secp384r1 elliptic curve. Attackers can provide LoginPackets with keys using different curves or non-EC key types to pass login verification but trigger an uncaught exception during ECDH key derivation, crashing the server.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2023-54355 since 01/10/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

Upgrading to version 4.23.1 or 5.3.1 eliminates this vulnerability.

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Productinfo

Vendor

• pmmp

Name

• PocketMine-MP

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18
• 4.19
• 4.20
• 4.21
• 4.22
• 4.23.0
• 5.0
• 5.1
• 5.2
• 5.3.0

Website

• Product: https://github.com/pmmp/PocketMine-MP/

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