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Fencer Intel
low 2.1

CVE-2009-0754 json

PHP 4.4.4, 5.1.6, and other versions, when running on Apache, allows local users to modify behavior of other sites hosted on the same web s…

published 17y ago modified 4mo ago also EUVD-2009-0754

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits
1
Exploit-DB

Summary

PHP 4.4.4, 5.1.6, and other versions, when running on Apache, allows local users to modify behavior of other sites hosted on the same web server by modifying the mbstring.func_overload setting within .htaccess, which causes this setting to be applied to other virtual hosts on the same server.

Patch / fix

  • php RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2
  • php-gd RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2
  • php-cli RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2
  • php-dba RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2
  • php-pdo RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2
  • php-xml RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2
  • php-imap RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2
  • php-ldap RHEL 2 APPLICATION_STACK 5.2.6-4.el5s2

red hat advisories RHSA-2009:0350RHSA-2009:0338RHSA-2009:0337

Is CVE-2009-0754 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-0754 updated cvss 2.1

PHP mbstring.func_overload web server denial of service

  • Red Hat Desktop version 3 php 4.3.2-51.ent, php-imap 4.3.2-51.ent, php-ldap 4.3.2-51.ent, php-odbc 4.3.2-51.ent, php-mysql 4.3.2-51.ent, php-pgsql 4.3.2-51.ent
    fixed: vendor fix RHSA-2009:0337
  • Red Hat Enterprise Linux (v. 5 server) php 5.1.6-23.2.el5_3, php-gd 5.1.6-23.2.el5_3, php-cli 5.1.6-23.2.el5_3, php-dba 5.1.6-23.2.el5_3, php-pdo 5.1.6-23.2.el5_3, php-xml 5.1.6-23.2.el5_3, +12 more
    fixed: vendor fix RHSA-2009:0338
  • Red Hat Enterprise Linux AS version 3 php 4.3.2-51.ent, php-imap 4.3.2-51.ent, php-ldap 4.3.2-51.ent, php-odbc 4.3.2-51.ent, php-mysql 4.3.2-51.ent, php-pgsql 4.3.2-51.ent Red Hat Enterprise Linux AS version 4 php 4.3.9-3.22.15, php-gd 4.3.9-3.22.15, php-imap 4.3.9-3.22.15, php-ldap 4.3.9-3.22.15, php-odbc 4.3.9-3.22.15, php-pear 4.3.9-3.22.15, +7 more Red Hat Enterprise Linux Desktop version 4 php 4.3.9-3.22.15, php-gd 4.3.9-3.22.15, php-imap 4.3.9-3.22.15, php-ldap 4.3.9-3.22.15, php-odbc 4.3.9-3.22.15, php-pear 4.3.9-3.22.15, +7 more
    fixed: vendor fix RHSA-2009:0337
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) php 5.1.6-23.2.el5_3, php-gd 5.1.6-23.2.el5_3, php-cli 5.1.6-23.2.el5_3, php-dba 5.1.6-23.2.el5_3, php-pdo 5.1.6-23.2.el5_3, php-xml 5.1.6-23.2.el5_3, +12 more
    fixed: vendor fix RHSA-2009:0338
  • Red Hat Enterprise Linux ES version 3 php 4.3.2-51.ent, php-imap 4.3.2-51.ent, php-ldap 4.3.2-51.ent, php-odbc 4.3.2-51.ent, php-mysql 4.3.2-51.ent, php-pgsql 4.3.2-51.ent Red Hat Enterprise Linux ES version 4 php 4.3.9-3.22.15, php-gd 4.3.9-3.22.15, php-imap 4.3.9-3.22.15, php-ldap 4.3.9-3.22.15, php-odbc 4.3.9-3.22.15, php-pear 4.3.9-3.22.15, +7 more Red Hat Enterprise Linux WS version 3 php 4.3.2-51.ent, php-imap 4.3.2-51.ent, php-ldap 4.3.2-51.ent, php-odbc 4.3.2-51.ent, php-mysql 4.3.2-51.ent, php-pgsql 4.3.2-51.ent Red Hat Enterprise Linux WS version 4 php 4.3.9-3.22.15, php-gd 4.3.9-3.22.15, php-imap 4.3.9-3.22.15, php-ldap 4.3.9-3.22.15, php-odbc 4.3.9-3.22.15, php-pear 4.3.9-3.22.15, +7 more
    fixed: vendor fix RHSA-2009:0337

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-32769)
  2. Published

Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-14).

Exploits and checks

  • EDB-32769 PHP 5.2.5 - 'mbstring.func_overload' WebServer Denial of Service dos, 2009-01-30
  • bugs.php.net http://bugs.php.net/bug.php?id=27421 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-134 Use of Externally-Controlled Format String
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.