CVE-2008-5557
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 2.0
- 10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
- EPSS
- 7.37% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- php/php
- Source
- cve@mitre.org
References
- http://archives.neohapsis.com/archives/fulldisclosure/2008-12/0477.html
- http://bugs.php.net/bug.php?id=45722Exploit
- http://cvs.php.net/viewvc.cgi/php-src/ext/mbstring/libmbfl/filters/mbfilter_htmlent.c?r1=1.7&r2=1.8Exploit
- 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.php#5.2.7
- 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.htmlUS Government Resource
- http://www.vupen.com/english/advisories/2009/1297
- https://exchange.xforce.ibmcloud.com/vulnerabilities/47525
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10286
- 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://archives.neohapsis.com/archives/fulldisclosure/2008-12/0477.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.