#VU110523 Cross-site scripting in PHP - CVE-2004-0595

Vulnerability identifier: #VU110523

Vulnerability risk: Medium

CVSSv4.0: N/A

CVE-ID: CVE-2004-0595

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. The vulnerability 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.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.1, 4.1.1, 4.1.2, 4.2, 4.2.1, 4.2.2, 4.2.3, 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.5, 4.3.6, 4.3.7, 5

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External links
https://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000847
https://lists.grok.org.uk/pipermail/full-disclosure/2004-July/023909.html
https://marc.info/?l=bugtraq&m=108981780109154&w=2
https://marc.info/?l=bugtraq&m=108982983426031&w=2
https://marc.info/?l=bugtraq&m=109051444105182&w=2
https://marc.info/?l=bugtraq&m=109181600614477&w=2
https://www.debian.org/security/2004/dsa-531
https://www.debian.org/security/2005/dsa-669
https://www.gentoo.org/security/en/glsa/glsa-200407-13.xml
https://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2004:068
https://www.novell.com/linux/security/advisories/2004_21_php4.html
https://www.redhat.com/support/errata/RHSA-2004-392.html
https://www.redhat.com/support/errata/RHSA-2004-395.html
https://www.redhat.com/support/errata/RHSA-2004-405.html
https://www.redhat.com/support/errata/RHSA-2005-816.html
https://www.securityfocus.com/bid/10724
https://exchange.xforce.ibmcloud.com/vulnerabilities/16692
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10619

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.