CVE-2007-4661: Buffer Overflow
First published: Tue Sep 04 2007(Updated: )
The chunk_split function in string.c in PHP 5.2.3 does not properly calculate the needed buffer size due to precision loss when performing integer arithmetic with floating point numbers, which has unknown attack vectors and impact, possibly resulting in a heap-based buffer overflow. NOTE: this is due to an incomplete fix for CVE-2007-2872.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PHP | =5.2.3 |
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Reference Links
- http://cvs.php.net/viewvc.cgi/php-src/ext/standard/string.c?r1=1.445.2.14.2.58&r2=1.445.2.14.2.59
- http://www.php.net/ChangeLog-5.php#5.2.4
- http://www.php.net/releases/5_2_4.php
- http://secunia.com/advisories/26642
- https://issues.rpath.com/browse/RPL-1702
- https://launchpad.net/bugs/173043
- http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
- http://www.ubuntu.com/usn/usn-549-2
- http://secunia.com/advisories/26838
- http://secunia.com/advisories/27102
- http://secunia.com/advisories/27864
- http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html
- http://secunia.com/advisories/28658
- https://usn.ubuntu.com/549-1/
Frequently Asked Questions
What is the severity of CVE-2007-4661?
CVE-2007-4661 is considered to have an unknown severity level due to the lack of defined attack vectors and impact.
How do I fix CVE-2007-4661?
To fix CVE-2007-4661, you should upgrade PHP to version 5.2.4 or later.
What versions of PHP are affected by CVE-2007-4661?
CVE-2007-4661 specifically affects PHP version 5.2.3.
Can CVE-2007-4661 lead to a buffer overflow?
Yes, CVE-2007-4661 has the potential to result in a heap-based buffer overflow.
What function is implicated in CVE-2007-4661?
The chunk_split function in string.c is implicated in CVE-2007-4661.
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