admin.php in Frax.dk Php Recommend 1.3 and earlier does not require authentication when the user password is changed, which allows remote attackers to gain administrative privileges via modified form_admin_user and form_admin_pass parameters.

References

• https://nvd.nist.gov/vuln/detail/CVE-2009-1780
• https://www.exploit-db.com/exploits/8658
• http://www.securityfocus.com/bid/34909
• http://www.vupen.com/english/advisories/2009/1287