Vulnerability Description
strtod.c, as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before 5.3.5, and other products, allows context-dependent attackers to cause a denial of service (infinite loop) via a certain floating-point value in scientific notation, which is not properly handled in x87 FPU registers, as demonstrated using 2.2250738585072011e-308.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | 5.2.0 |
Related Weaknesses (CWE)
References
- http://bugs.php.net/53632Exploit
- http://hal.archives-ouvertes.fr/docs/00/28/14/29/PDF/floating-point-article.pdf
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053333.ht
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053355.ht
- http://marc.info/?l=bugtraq&m=133226187115472&w=2
- http://marc.info/?l=bugtraq&m=133469208622507&w=2
- http://secunia.com/advisories/42812
- http://secunia.com/advisories/42843
- http://secunia.com/advisories/43051
- http://secunia.com/advisories/43189
- http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware
- http://support.apple.com/kb/HT5002
- http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_strtod.c?r1=266Patch
- http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-30
FAQ
What is CVE-2010-4645?
CVE-2010-4645 is a vulnerability with a CVSS score of 5.0 (MEDIUM). strtod.c, as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before 5.3.5, and other products, allows context-dependent attackers to cause a denial of service (infinite loop) via a c...
How severe is CVE-2010-4645?
CVE-2010-4645 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2010-4645?
Check the references section above for vendor advisories and patch information. Affected products include: Php Php.