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TITLE:
OpenTTD Pause On Join Denial Of Service Vulnerability

SECUNIA ADVISORY ID:
SA47396

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47396/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47396

RELEASE DATE:
2012-01-09

DISCUSS ADVISORY:
http://secunia.com/advisories/47396/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Criticality Level
 * Impact
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 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/47396/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=47396

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in OpenTTD, which can be exploited
by malicious users to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the implementation
of the "pause on join" feature when handling connection requests for
new users. This can be exploited to consume certain resources by
reading the response very slowly and preventing the subsequent users
from connecting to the game.

Successful exploitation requires that "pause on join" is enabled.

The vulnerability is reported in versions 1.1.4 and prior.

SOLUTION:
Fixed in the VCS repository. Update to version 1.1.5 when available.

PROVIDED AND/OR DISCOVERED BY:
Reported in a forum post.

ORIGINAL ADVISORY:
http://www.tt-forums.net/viewtopic.php?f=33&t=58073&hilit=pause#p989303
http://www.openwall.com/lists/oss-security/2012/01/07/2

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
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