OpenTTD Client Disconnection Handling Use-after-free Vulnerability

2010.11.25
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-399


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

Hi folks, we, the OpenTTD developers, have identified a security vulnerability in OpenTTD (an open source game with multiplayer). Would you be so kind as to allocate a CVE id for this issue? The issue concerns a denial of service vulnerability in the form of reading and writing already freed memory. The first vulnerable version is 1.0.0, the upcoming 1.0.5 release will have the issue fixed. Once a CVE id is allocated, the issue will be documented at http://security.openttd.org/CVE-2010-xxxx Thanks in advance, Remko 'Rubidium' Bijker

References:

http://security.openttd.org/en/patch/28.patch
http://security.openttd.org/en/CVE-2010-4168
http://www.vupen.com/english/advisories/2010/2985
http://vcs.openttd.org/svn/changeset/21182
http://marc.info/?l=oss-security&m=128984298802678&w=2
http://marc.info/?l=oss-security&m=128975491407670&w=2


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