github - ghsa-r56f-c7p9-h5jg

ghsa-r56f-c7p9-h5jg

Vulnerability from github

Published

2025-08-20 18:30

Modified

2025-08-20 18:30

Severity ?

8.7 (High) - 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

Details

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.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2011-10020"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-20T16:15:34Z",
    "severity": "HIGH"
  },
  "details": "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\u2019s UDP packet handler, allowing unauthenticated remote attackers to disrupt service availability.",
  "id": "GHSA-r56f-c7p9-h5jg",
  "modified": "2025-08-20T18:30:21Z",
  "published": "2025-08-20T18:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-10020"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/games/kaillera.rb"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/17460"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/kaillera-server-dos-via-malformed-udp-packet"
    },
    {
      "type": "WEB",
      "url": "http://kaillera.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2011-10020 (GCVE-0-2011-10020)

Vulnerability from cvelistv5

Published

2025-08-20 15:35

Modified

2025-08-22 16:21

Severity ?

8.7 (High) - 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

CWE

CWE-20 - Improper Input Validation

Summary

References

▼	URL	Tags
	https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/games/kaillera.rb	exploit
	https://www.exploit-db.com/exploits/17460	exploit
	http://kaillera.com/	product
	https://www.vulncheck.com/advisories/kaillera-server-dos-via-malformed-udp-packet	third-party-advisory

Impacted products

	Vendor	Product	Version
	Kaillera Project	Server	Version: * ≤ 0.86

Show details on NVD website

JSON

To clipboard

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                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-22T16:21:09.395156Z",
                "version": "2.0.3"
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        },
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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