Improper input validation in PHP - CVE-2007-3998
Published: October 26, 2018 / Updated: June 8, 2025
Vulnerability identifier: #VU110378
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2007-3998
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The wordwrap function in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, does not properly use the breakcharlen variable, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash, or infinite loop) via certain arguments, as demonstrated by a 'chr(0), 0, ''' argument set.
How to mitigate CVE-2007-3998
Install update from vendor's repository.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
- http://rhn.redhat.com/errata/RHSA-2007-0889.html
- http://secunia.com/advisories/26642
- http://secunia.com/advisories/26822
- http://secunia.com/advisories/26838
- http://secunia.com/advisories/26871
- http://secunia.com/advisories/26895
- http://secunia.com/advisories/26930
- http://secunia.com/advisories/26967
- http://secunia.com/advisories/27102
- http://secunia.com/advisories/27377
- http://secunia.com/advisories/27545
- http://secunia.com/advisories/27864
- http://secunia.com/advisories/28249
- http://secunia.com/advisories/28658
- http://secunia.com/advisories/30288
- http://secweb.se/en/advisories/php-wordwrap-vulnerability/
- http://support.avaya.com/elmodocs2/security/ASA-2007-449.htm
- http://www.debian.org/security/2008/dsa-1444
- http://www.debian.org/security/2008/dsa-1578
- http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:187
- http://www.php.net/ChangeLog-5.php#5.2.4
- http://www.php.net/releases/5_2_4.php
- http://www.redhat.com/support/errata/RHSA-2007-0890.html
- http://www.redhat.com/support/errata/RHSA-2007-0891.html
- http://www.trustix.org/errata/2007/0026/
- http://www.ubuntu.com/usn/usn-549-2
- http://www.vupen.com/english/advisories/2007/3023
- https://issues.rpath.com/browse/RPL-1693
- https://issues.rpath.com/browse/RPL-1702
- https://launchpad.net/bugs/173043
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10603
- https://usn.ubuntu.com/549-1/
- https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00354.html