CVE-2008-5557 Information
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Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity which is not properly handled during Unicode conversion related to the (1) mb_convert_encoding (2) mb_check_encoding (3) mb_convert_variables and (4) mb_parse_str functions.
Reference
http://archives.neohapsis.com/archives/fulldisclosure/2008-12/0477.html http://bugs.php.net/bug.php?id=45722 http://cvs.php.net/viewvc.cgi/php-src/ext/mbstring/libmbfl/filters/mbfilter_htmlent.c?r1=1.7&r2=1.8 http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02029444 http://lists.apple.com/archives/security-announce/2009/May/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html http://marc.info/?l=bugtraq&m=124654546101607&w=2 http://marc.info/?l=bugtraq&m=125631037611762&w=2 http://secunia.com/advisories/34642 http://secunia.com/advisories/35003 http://secunia.com/advisories/35074 http://secunia.com/advisories/35306 http://secunia.com/advisories/35650 http://securitytracker.com/id?1021482 http://support.apple.com/kb/HT3549 http://wiki.rpath.com/Advisories:rPSA-2009-0035 http://www.debian.org/security/2009/dsa-1789 http://www.mandriva.com/security/advisories?name=MDVSA-2009:045 http://www.php.net/ChangeLog-5.php5.2.7 http://www.redhat.com/support/errata/RHSA-2009-0350.html http://www.securityfocus.com/archive/1/501376/100/0/threaded http://www.securityfocus.com/bid/32948 http://www.us-cert.gov/cas/techalerts/TA09-133A.html http://www.vupen.com/english/advisories/2009/1297 https://exchange.xforce.ibmcloud.com/vulnerabilities/47525 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A10286 https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01451.html https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01465.html