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CVE-2011-10020— Kaillera 0.86 Server DoS via Malformed UDP Packet

Quick assessment

Affected
Kaillera Project Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kaillera Server是Kaillera开源的一个游戏服务器软件。 Kaillera Server 0.86版本存在安全漏洞，该漏洞源于UDP数据包处理不当，可能导致拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 1.31% · P70

Public Exploits 1

Metasploit · 1 kaillera.rb [auxiliary]

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Kaillera Project Server ≤ 0.86 affected
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I. Basic Information for CVE-2011-10020

Vulnerability Information
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Vulnerability Title
Kaillera 0.86 Server DoS via Malformed UDP Packet
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kaillera Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kaillera Server是Kaillera开源的一个游戏服务器软件。 Kaillera Server 0.86版本存在安全漏洞，该漏洞源于UDP数据包处理不当，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kaillera Project Server 0 ~ 0.86 -

II. Public POCs for CVE-2011-10020

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III. Intelligence Information for CVE-2011-10020

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IV. Related Vulnerabilities

Same product: Server
Same weakness: CWE-20

V. Comments for CVE-2011-10020

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