PHP是一款广泛使用的WEB开发脚本语言。 PHP _SESSION unset()存在问题，远程攻击者可利用此漏洞以应用程序权限执行任意指令。 因为不包含会话全局中的内部指针，会话扩展不正确设置会话变量的引用计数值。可导致unset() _SESSION和HTTP_SESSION_VAR会破坏包含会话数据的HASH表，虽然会话扩展仍旧包含内部指针指向，并内部仍旧使用它。通过特殊构建的字符串可替代HASH表导致任意代码执行。 PHP PHP 5.1.6 PHP PHP 5.1.5 PHP PHP 5.1.4 PHP PHP 5.1.3 PHP PHP 5.1.3 PHP PHP 5.1.2 PHP PHP 5.1.1 PHP PHP 5.1 PHP PHP 5.0.5 PHP PHP 5.0.4 PHP PHP 5.0.3 + Trustix Secure Linux 2.2 PHP PHP 5.0.2 PHP PHP 5.0.1 PHP PHP 5.0 candidate 3 PHP PHP 5.0 candidate 2 PHP PHP 5.0 candidate 1 PHP PHP 4.4.4 PHP PHP 4.4.3 PHP PHP 4.4.2 PHP PHP 4.4.1 PHP PHP 4.4 .0 PHP PHP 4.3.11 PHP PHP 4.3.10 + Gentoo Linux + RedHat Fedora Core3 + Trustix Secure Enterprise Linux 2.0 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 + Trustix Secure Linux 2.0 + Trustix Secure Linux 1.5 PHP PHP 4.3.9 PHP PHP 4.3.8 + MandrakeSoft Linux Mandrake 10.1 x86_64 + MandrakeSoft Linux Mandrake 10.1 + S.u.S.E. Linux Personal 9.2 + Turbolinux Turbolinux Server 10.0 + Ubuntu Ubuntu Linux 4.1 ppc + Ubuntu Ubuntu Linux 4.1 ia64 + Ubuntu Ubuntu Linux 4.1 ia32 PHP PHP 4.3.7 PHP PHP 4.3.6 PHP PHP 4.3.5 PHP PHP 4.3.4 + MandrakeSoft Corporate Server 3.0 x86_64 + MandrakeSoft Corporate Server 3.0 + MandrakeSoft Linux Mandrake 10.0 AMD64 + MandrakeSoft Linux Mandrake 10.0 + S.u.S.E. Linux Personal 9.1 PHP PHP 4.3.3 + S.u.S.E. Linux Personal 9.0 x86_64 + S.u.S.E. Linux Personal 9.0 + Turbolinux Home + Turbolinux Turbolinux 10 F... + Turbolinux Turbolinux Desktop 10.0 PHP PHP 4.3.2 PHP PHP 4.3.1 + MandrakeSoft Linux Mandrake 9.1 ppc + MandrakeSoft Linux Mandrake 9.1 + OpenPKG OpenPKG Current + S.u.S.E. Linux Personal 8.2 PHP PHP 4.3 PHP PHP 4.2.3 + EnGarde Secure Linux 1.0.1 + MandrakeSoft Corporate Server 2.1 x86_64 + MandrakeSoft Corporate Server 2.1 + MandrakeSoft Linux Mandrake 9.0 + Turbolinux Turbolinux Server 8.0 + Turbolinux Turbolinux Server 7.0 + Turbolinux Turbolinux Workstation 8.0 + Turbolinux Turbolinux Workstation 7.0 PHP PHP 4.2.2 + Gentoo Linux 1.4 _rc1 + Gentoo Linux 1.2 + OpenPKG OpenPKG 1.1 + RedHat Linux 8.0 i386 + RedHat Linux 8.0 + S.u.S.E. Linux 8.1 PHP PHP 4.2.1 - FreeBSD FreeBSD 4.6 - FreeBSD FreeBSD 4.5 - FreeBSD FreeBSD 4.4 - FreeBSD FreeBSD 4.3 + Slackware Linux 8.1 PHP PHP 4.2 .0 PHP PHP 4.2 -dev PHP PHP 4.1.2 + Apple Mac OS X 10.1.5 + Apple Mac OS X 10.1.4 + Apple Mac OS X 10.1.3 + Apple Mac OS X 10.1.2 + Apple Mac OS X 10.1.1 + Apple Mac OS X 10.1 + Apple Mac OS X 10.1 + Apple Mac OS X 10.0.4 + Apple Mac OS X 10.0.3 + Apple Mac OS X 10.0.2 + Apple Mac OS X 10.0.1 + Apple Mac OS X 10.0 + Debian Linux 3.0 sparc + Debian Linux 3.0 s/390 + Debian Linux 3.0 ppc + Debian Linux 3.0 mipsel + Debian Linux 3.0 mips + Debian Linux 3.0 m68k + Debian Linux 3.0 ia-64 + Debian Linux 3.0 ia-32 + Debian Linux 3.0 hppa + Debian Linux 3.0 arm + Debian Linux 3.0 alpha + MandrakeSoft Linux Mandrake 8.2 ppc + MandrakeSoft Linux Mandrake 8.2 + MandrakeSoft Multi Network Firewall 2.0 + MandrakeSoft Single Network Firewall 7.2 PHP PHP 4.1.1 + Conectiva Linux 7.0 PHP PHP 4.1 .0 + S.u.S.E. Linux 8.0 i386 + S.u.S.E. Linux 8.0 PHP PHP 4.0.7 RC3 PHP PHP 4.0.7 RC2 PHP PHP 4.0.7 RC1 PHP PHP 4.0.7 PHP PHP 4.0.6 + Caldera OpenLinux Server 3.1.1 + Caldera OpenLinux Server 3.1 + Caldera OpenLinux Workstation 3.1.1 + Caldera OpenLinux Workstation 3.1 + HP Secure OS software for Linux 1.0 - IBM AIX 4.3.3 - IBM AIX 4.3.2 - IBM AIX 4.3.1 - IBM AIX 4.3 - IBM AIX 5.1 + MandrakeSoft Corporate Server 1.0.1 + MandrakeSoft Linux Mandrake 8.1 ia64 + MandrakeSoft Linux Mandrake 8.1 + MandrakeSoft Linux Mandrake 8.0 ppc + MandrakeSoft Linux Mandrake 8.0 + MandrakeSoft Linux Mandrake 7.2 + MandrakeSoft Linux Mandrake 7.1 + RedHat Linux 7.2 ia64 + RedHat Linux 7.2 i386 + RedHat Linux 7.2 + RedHat Linux 7.1 ia64 + RedHat Linux 7.1 i386 + RedHat Linux 7.1 alpha + RedHat Linux 7.1 + RedHat Linux 7.0 i386 + RedHat Linux 7.0 alpha + RedHat Linux 7.0 + S.u.S.E. Linux 7.3 sparc + S.u.S.E. Linux 7.3 ppc + S.u.S.E. Linux 7.3 i386 + S.u.S.E. Linux 7.3 + S.u.S.E. Linux 7.2 i386 + S.u.S.E. Linux 7.2 + Sun Cobalt RaQ 550 + Sun LX50 + Trustix Secure Linux 1.5 PHP PHP 4.0.5 PHP PHP 4.0.4 + Compaq Compaq Secure Web Server PHP 1.0 + Conectiva Linux 6.0 + Guardian Digital Engarde Secure Linux 1.0.1 + S.u.S.E. Linux 7.2 + S.u.S.E. Linux 7.1 x86 + S.u.S.E. Linux 7.1 sparc + S.u.S.E. Linux 7.1 ppc + S.u.S.E. Linux 7.1 alpha + S.u.S.E. Linux 7.1 + S.u.S.E. Linux 7.0 sparc + S.u.S.E. Linux 7.0 ppc + S.u.S.E. Linux 7.0 i386 + S.u.S.E. Linux 7.0 alpha + S.u.S.E. Linux 7.0 PHP PHP 4.0.3 pl1 + S.u.S.E. Linux 6.4 ppc + S.u.S.E. Linux 6.4 i386 + S.u.S.E. Linux 6.4 alpha + S.u.S.E. Linux 6.4 PHP PHP 4.0.3 + Debian Linux 2.2 sparc + Debian Linux 2.2 powerpc + Debian Linux 2.2 IA-32 + Debian Linux 2.2 arm + Debian Linux 2.2 alpha + Debian Linux 2.2 68k + Debian Linux 2.2 + Sun Cobalt Control Station 4100CS + Sun Cobalt Qube3 Japanese 4000WGJ + Sun Cobalt Qube3 Japanese w/ Caching and RAID 4100WGJ + Sun Cobalt Qube3 Japanese w/Caching 4010WGJ + Sun Cobalt RaQ XTR 3500R + Sun Cobalt RaQ XTR Japanese 3500R-ja PHP PHP 4.0.2 PHP PHP 4.0.1 pl2 PHP PHP 4.0.1 pl1 PHP PHP 4.0.1 + Sun Cobalt Qube3 4000WG + Sun Cobalt Qube3 w/ Caching and RAID 4100WG + Sun Cobalt Qube3 w/Caching 4010WG + Sun Cobalt RaQ4 3001R + Sun Cobalt RaQ4 Japanese RAID 3100R-ja + Sun Cobalt RaQ4 RAID 3100R PHP PHP 4.0 0 PHP PHP 5.2 厂商解决方案 目前没有详细解决方案提供： <a href="http://www.php.net/" target="_blank">http://www.php.net/</a>
