Kaillera Server version 0.86 is vulnerable to a denial-of-service condition triggered by sending a malformed UDP packet after the initial handshake. Once a client sends a valid HELLO0.83 packet and receives a response, any subsequent malformed packet causes the server to crash and become unresponsive. This flaw stems from improper input validation in the server’s UDP packet handler, allowing unauthenticated remote attackers to disrupt service availability.
History

Wed, 20 Aug 2025 15:45:00 +0000

Type Values Removed Values Added
Description Kaillera Server version 0.86 is vulnerable to a denial-of-service condition triggered by sending a malformed UDP packet after the initial handshake. Once a client sends a valid HELLO0.83 packet and receives a response, any subsequent malformed packet causes the server to crash and become unresponsive. This flaw stems from improper input validation in the server’s UDP packet handler, allowing unauthenticated remote attackers to disrupt service availability.
Title Kaillera 0.86 Server DoS via Malformed UDP Packet
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2025-08-20T15:35:41.803Z

Updated: 2025-08-20T15:35:41.803Z

Reserved: 2025-08-18T18:16:21.770Z

Link: CVE-2011-10020

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-08-20T16:15:34.327

Modified: 2025-08-20T16:15:34.327

Link: CVE-2011-10020

cve-icon Redhat

No data.