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AMX Mod X "geoip_code2()" and "geoip_code3()" Off-By-One Vulnerabilities Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA27411  
Release Date: 2007-10-26
Last Update: 2007-10-31

Critical:
Moderately critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Workaround

Software:AMX Mod X 1.x

CVE reference:CVE-2007-5713 (Secunia mirror)



Description:
Simon Logic has reported some vulnerabilities in AMX Mod X, which can potentially be exploited by malicious people to cause a DoS (Denial of Service) or compromise an application using the plugin.

The vulnerabilities are caused due to the "geoip_code2()" and "geoip_code3()" functions incorrectly handling country lookup errors. This can be exploited to cause a buffer overflow with a zero byte.

The vulnerabilities are reported in version 1.76d. Other versions may also be affected.

Solution:
Update to version 1.8.0.

The vendor recommends the usage of the "geoip_code2_ex()" and "geoip_code3_ex()" functions in order to avoid the buffer overflow.

Provided and/or discovered by:
Simon Logic

Changelog:
2007-10-31: Added CVE reference.

Original Advisory:
http://bugs.alliedmods.net/index.php?do=details&task_id=519
http://wiki.alliedmods.net/AMX_Mod_X_1.8.0_Changes



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.


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