CVE-2010-3870

MEDIUM

Description

The utf8_decode function in PHP before 5.3.4 does not properly handle non-shortest form UTF-8 encoding and ill-formed subsequences in UTF-8 data, which makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string.

References

http://bugs.php.net/bug.php?id=48230

http://bugs.php.net/bug.php?id=49687

http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html

http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html

http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html

http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html

http://marc.info/?l=bugtraq&m=133469208622507&w=2

http://secunia.com/advisories/42410

http://secunia.com/advisories/42812

http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html

http://support.apple.com/kb/HT4581

http://svn.php.net/viewvc?view=revision&revision=304959

http://us2.php.net/manual/en/function.utf8-decode.php#83935

http://www.acunetix.com/blog/web-security-articles/security-risks-associated-with-utf8_decode/

http://www.blackhat.com/presentations/bh-usa-09/VELANAVA/BHUSA09-VelaNava-FavoriteXSS-SLIDES.pdf

http://www.mandriva.com/en/security/advisories?name=MDVSA-2010:224

http://www.openwall.com/lists/oss-security/2010/11/02/1

http://www.openwall.com/lists/oss-security/2010/11/02/11

http://www.openwall.com/lists/oss-security/2010/11/02/2

http://www.openwall.com/lists/oss-security/2010/11/02/4

http://www.openwall.com/lists/oss-security/2010/11/02/6

http://www.openwall.com/lists/oss-security/2010/11/02/8

http://www.openwall.com/lists/oss-security/2010/11/03/1

http://www.php.net/ChangeLog-5.php

http://www.redhat.com/support/errata/RHSA-2010-0919.html

http://www.redhat.com/support/errata/RHSA-2011-0195.html

http://www.securityfocus.com/bid/44605

http://www.securitytracker.com/id?1024797

http://www.ubuntu.com/usn/USN-1042-1

http://www.vupen.com/english/advisories/2010/3081

http://www.vupen.com/english/advisories/2011/0020

http://www.vupen.com/english/advisories/2011/0021

http://www.vupen.com/english/advisories/2011/0077

Details

Source: MITRE

Published: 2010-11-12

Updated: 2018-10-30

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM