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.
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
https://exchange.xforce.ibmcloud.com/vulnerabilities/47525
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10286
http://support.apple.com/kb/HT3549
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01451.html
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01465.html
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.php#5.2.7
http://www.redhat.com/support/errata/RHSA-2009-0350.html
Published: 2008-12-23
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical