Skip to content
OpenAdvisories
Unscored Public exploit CVE-2004-0595 EUVD-2004-0594GHSA-h8wj-59vf-r37g

The strip_tags function in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, does not filter null (\0) characters within tag names when restrict…

Published Jul 16, 2004 · Updated Aug 8, 2024 · Assigned by mitre

Description

The strip_tags function in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, does not filter null (\0) characters within tag names when restricting input to allowed tags, which allows dangerous tags to be processed by web browsers such as Internet Explorer and Safari, which ignore null characters and facilitate the exploitation of cross-site scripting (XSS) vulnerabilities.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 3.0 php3 3:3.0.18-23.1woody2 DSA-669-1
Debian 3.0 php4 4.1.2-7 DSA-531

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 3 php +6 4.3.2-11.1.ent RHSA-2004:392

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 3

References