OpenTTD water denial of service

openttd-water-dos (77266) The risk level is classified as MediumMedium Risk

Description:

OpenTTD is vulnerable to a denial of service, caused by an error when handling a request to clear a water tile. If a water tile containing a ship is raised, an attacker could exploit this vulnerability to cause the server to crash.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 3.2
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to OpenTTD Web site for patch, upgrade or suggested workaround information. See References.

References:

  • OpenTTD Web site: CVE-2012-3436 (vulnerable 0.6.0 - fixed 1.2.2).
  • BID-54720: OpenTTD 'Water Clearing' Feature Denial Of Service Vulnerability
  • CVE-2012-3436: OpenTTD 0.6.0 through 1.2.1 does not properly validate requests to clear a water tile, which allows remote attackers to cause a denial of service (NULL pointer dereference and server crash) via a certain sequence of steps related to the water/coast aspect of tiles which also have railtracks on one half.
  • DSA-2524: openttd -- several vulnerabilities
  • OSVDB ID: 84314: OpenTTD Water Tile Clearing Request Parsing Remote DoS
  • SA50042: OpenTTD Water Clearing Denial Of Service Vulnerability

Platforms Affected:

  • OpenTTD OpenTTD 0.6.0
  • OpenTTD OpenTTD 0.6.0 Rc1
  • OpenTTD OpenTTD 0.6.0 Beta5
  • OpenTTD OpenTTD 0.6.0 Beta4
  • OpenTTD OpenTTD 0.6.0 Beta3
  • OpenTTD OpenTTD 0.6.0 Beta2
  • OpenTTD OpenTTD 0.6.0 Beta1
  • OpenTTD OpenTTD 0.6.1 Rc1
  • OpenTTD OpenTTD 0.6.1 Rc2
  • OpenTTD OpenTTD 0.6.1
  • OpenTTD OpenTTD 0.6.2 rc1
  • OpenTTD OpenTTD 0.6.2 rc2
  • OpenTTD OpenTTD 0.7.4
  • OpenTTD OpenTTD 1.0
  • OpenTTD OpenTTD 1.0.1
  • OpenTTD OpenTTD 1.0.2
  • OpenTTD OpenTTD 1.0.3
  • OpenTTD OpenTTD 1.0.4
  • OpenTTD OpenTTD 1.1.4

Reported:

Jul 30, 2012

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