CVE-2022-51017 pmmp CVE debrief

Who should care

Defenders responsible for PocketMine-MP installations should assess exposure and prioritize updates to prevent potential server crashes caused by malformed skin data submissions. They should verify and update PocketMine-MP installations, monitor server logs for unusual skin data submissions, and implement additional validation for skin data fields to prevent attacks. Security teams and vulnerability management teams should also review the CVE record and N

Why it matters

CVE-2022-51017 is a vulnerability in PocketMine-MP that can cause server crashes due to inadequate skin data validation. Defenders should prioritize verifying and updating installations to prevent potential attacks.

• Potential server crashes due to malformed skin data submissions
• Need to verify and update PocketMine-MP installations to prevent attacks
• Possible denial-of-service attacks via oversized skin data fields

Technical summary

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 TAG_String limit. Attackers can submit oversized skin data fields like skinID or geometryName to trigger exceptions during NBT data serialization, causing server crashes. Defenders should prioritize verifying and updating PocketMine-MP installations to prevent potential server crashes caused by malformed skin data submissions. This vulnerability can lead to denial-of-service attacks via oversized skin data fields.

Defensive priority

Defenders should prioritize verifying and updating PocketMine-MP installations to prevent potential server crashes caused by malformed skin data submissions.

Recommended defensive actions

• Verify PocketMine-MP installations and update to version 3.26.5 or 4.0.5 if necessary
• Monitor server logs for unusual skin data submissions
• Implement additional validation for skin data fields
• 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

Evidence from official sources indicates that PocketMine-MP versions before 3.26.5 and 4.0.5 are vulnerable to a denial-of-service attack via oversized skin data fields. Limited information is available on actual exploitation or impact. Defenders should verify PocketMine-MP installations and monitor server logs for unusual skin data submissions to prevent potential attacks. The CVE record and NVD detail page provide additional context on the vulnerability.

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.