CVE-2006-4023

Public Exploit

Description

The ip2long function in PHP 5.1.4 and earlier may incorrectly validate an arbitrary string and return a valid network IP address, which allows remote attackers to obtain network information and facilitate other attacks, as demonstrated using SQL injection in the X-FORWARDED-FOR Header in index.php in MiniBB 2.0. NOTE: it could be argued that the ip2long behavior represents a risk for security-relevant issues in a way that is similar to strcpy's role in buffer overflows, in which case this would be a class of implementation bugs that would require separate CVE items for each PHP application that uses ip2long in a security-relevant manner.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 0.30%

Affected: n/a n/a

References

Link	Tags
http://www.securityfocus.com/archive/1/441708/100/100/threaded	mailing list
http://www.securityfocus.com/archive/1/441529/100/100/threaded	mailing list
http://retrogod.altervista.org/php_ip2long.htm	exploit
http://securitytracker.com/id?1016609	vdb entry exploit

Frequently Asked Questions

What is the severity of CVE-2006-4023?: CVE-2006-4023 has been scored as a medium severity vulnerability.
How to fix CVE-2006-4023?: To fix CVE-2006-4023, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2006-4023 being actively exploited in the wild?: It is possible that CVE-2006-4023 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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