CVE-2022-51011 pmmp CVE debrief

Who should care

Defenders responsible for PocketMine-MP installations, especially those exposed to untrusted clients, should assess and mitigate this vulnerability to prevent potential server lockups and increased resource utilization. This includes operators, platform administrators, vulnerability management teams, and security teams who need to prioritize verifying and mitigating CVE-2022-51011.

Why it matters

Defenders should prioritize verifying and mitigating CVE-2022-51011 in PocketMine-MP installations, especially those exposed to untrusted clients, as it can cause server lockups and increased resource utilization.

• Potential server lockups lasting seconds or minutes due to large chat messages
• Increased resource utilization due to handling large messages
• Possible degradation of service for legitimate users

Technical summary

PocketMine-MP before 4.2.10 fails to validate the total length of incoming chat message blobs before splitting them by newline characters, allowing attackers to send large messages containing many newlines. This vulnerability can cause server lockups and increased resource utilization. Defenders should prioritize verifying and mitigating this vulnerability in PocketMine-MP installations, especially those exposed to untrusted clients, to prevent potential operational impacts. The vulnerability has a CVSS score of 5.3 and a severity of MEDIUM.

Defensive priority

Defenders should prioritize verifying and mitigating this vulnerability in PocketMine-MP installations, especially those exposed to untrusted clients.

Recommended defensive actions

• Verify PocketMine-MP version and upgrade to 4.2.10 or later if necessary
• Restrict chat message length and content to prevent large messages
• Monitor server performance and adjust configuration as needed
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional information from vendor sources is limited. Defenders should verify and mitigate CVE-2022-51011 in PocketMine-MP installations, especially those exposed to untrusted clients. The vulnerability can cause server lockups lasting seconds or minutes and increased resource utilization due to handling large messages. Evidence is limited to CVE and NVD entries, with no additional vendor-provided information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.