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Vulnerability Details : 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 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.
Publish Date : 2008-12-23 Last Update Date : 2010-08-21
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access Admin
Vulnerability Type(s) Execute CodeOverflow
CWE ID 119

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate 2008-12-23 2008-08-05
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2008-5557 unix
DSA-1789 php5 -- several vulnerabilities oval:org.mitre.oval:def:8164 unix
DSA-1789-1 php5 -- several oval:org.mitre.oval:def:13696 unix
ELSA-2009:0338: php security update (Moderate) oval:org.mitre.oval:def:22732 unix
Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 thr... oval:org.mitre.oval:def:10286 unix
RHSA-2009:0337: php security update (Moderate) oval:com.redhat.rhsa:def:20090337 unix
RHSA-2009:0338 -- php security update (Moderate) oval:org.mitre.oval:def:29345 unix
RHSA-2009:0338: php security update (Moderate) oval:com.redhat.rhsa:def:20090338 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2008-5557

# Product Type Vendor Product Version Update Edition Language
1 Application PHP PHP 4.3.0 Version Details Vulnerabilities
2 Application PHP PHP 4.3.1 Version Details Vulnerabilities
3 Application PHP PHP 4.3.2 Version Details Vulnerabilities
4 Application PHP PHP 4.3.3 Version Details Vulnerabilities
5 Application PHP PHP 4.3.4 Version Details Vulnerabilities
6 Application PHP PHP 4.3.5 Version Details Vulnerabilities
7 Application PHP PHP 4.3.6 Version Details Vulnerabilities
8 Application PHP PHP 4.3.7 Version Details Vulnerabilities
9 Application PHP PHP 4.3.8 Version Details Vulnerabilities
10 Application PHP PHP 4.3.9 Version Details Vulnerabilities
11 Application PHP PHP 4.3.10 Version Details Vulnerabilities
12 Application PHP PHP 4.3.11 Version Details Vulnerabilities
13 Application PHP PHP 4.4.0 Version Details Vulnerabilities
14 Application PHP PHP 4.4.1 Version Details Vulnerabilities
15 Application PHP PHP 4.4.2 Version Details Vulnerabilities
16 Application PHP PHP 4.4.3 Version Details Vulnerabilities
17 Application PHP PHP 4.4.4 Version Details Vulnerabilities
18 Application PHP PHP 4.4.5 Version Details Vulnerabilities
19 Application PHP PHP 4.4.6 Version Details Vulnerabilities
20 Application PHP PHP 4.4.7 Version Details Vulnerabilities
21 Application PHP PHP 4.4.8 Version Details Vulnerabilities
22 Application PHP PHP 4.4.9 Version Details Vulnerabilities
23 Application PHP PHP 5.0.0 Beta3 Version Details Vulnerabilities
24 Application PHP PHP 5.0.0 Beta4 Version Details Vulnerabilities
25 Application PHP PHP 5.0.0 RC1 Version Details Vulnerabilities
26 Application PHP PHP 5.0.0 RC2 Version Details Vulnerabilities
27 Application PHP PHP 5.0.0 Beta1 Version Details Vulnerabilities
28 Application PHP PHP 5.0.0 RC3 Version Details Vulnerabilities
29 Application PHP PHP 5.0.0 Beta2 Version Details Vulnerabilities
30 Application PHP PHP 5.0.0 Version Details Vulnerabilities
31 Application PHP PHP 5.0.1 Version Details Vulnerabilities
32 Application PHP PHP 5.0.2 Version Details Vulnerabilities
33 Application PHP PHP 5.0.3 Version Details Vulnerabilities
34 Application PHP PHP 5.0.4 Version Details Vulnerabilities
35 Application PHP PHP 5.0.5 Version Details Vulnerabilities
36 Application PHP PHP 5.1.0 Version Details Vulnerabilities
37 Application PHP PHP 5.1.1 Version Details Vulnerabilities
38 Application PHP PHP 5.1.2 Version Details Vulnerabilities
39 Application PHP PHP 5.1.3 Version Details Vulnerabilities
40 Application PHP PHP 5.1.4 Version Details Vulnerabilities
41 Application PHP PHP 5.1.5 Version Details Vulnerabilities
42 Application PHP PHP 5.1.6 Version Details Vulnerabilities
43 Application PHP PHP 5.2.0 Version Details Vulnerabilities
44 Application PHP PHP 5.2.1 Version Details Vulnerabilities
45 Application PHP PHP 5.2.2 Version Details Vulnerabilities
46 Application PHP PHP 5.2.3 Version Details Vulnerabilities
47 Application PHP PHP 5.2.4 Version Details Vulnerabilities
48 Application PHP PHP 5.2.5 Version Details Vulnerabilities
49 Application PHP PHP 5.2.6 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions

- References For CVE-2008-5557 CONFIRM
FULLDISC 20081221 CVE-2008-5557 - PHP mbstring buffer overflow
SUSE SUSE-SR:2009:004
APPLE APPLE-SA-2009-05-12
SUSE SUSE-SR:2009:008
HP SSRT090192
HP SSRT090085
CERT TA09-133A
BUGTRAQ 20090302 rPSA-2009-0035-1 php php-cgi php-imap php-mcrypt php-mysql php-mysqli php-pgsql php-soap php-xsl php5 php5-cgi php5-imap php5-mcrypt php5-mysql php5-mysqli php5-pear php5-pgsql php5-soap php5-xsl
REDHAT RHSA-2009:0350
VUPEN ADV-2009-1297
XF php-multibyte-bo(47525)
BID 32948 PHP 'mbstring' Extension Buffer Overflow Vulnerability Release Date:2010-04-22

- Metasploit Modules Related To CVE-2008-5557

There are not any metasploit modules related to this vulnerability (Please visit for more information)

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