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CVE-2010-4645

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.

Published:Dec 30, 2010

Last Modified:Apr 11, 2025

EPS:Jan 11, 2011

EPSS Score:0.29506

CVSS Score:5

Affected Products

Vendor

Product

Action

Vendor

Php

Product

Php

Php

Php

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Exploits

http://bugs.php.net/53632 http://www.openwall.com/lists/oss-security/2011/01/05/2 http://www.securityfocus.com/bid/45668 http://bugs.php.net/53632 http://www.openwall.com/lists/oss-security/2011/01/05/2 http://www.securityfocus.com/bid/45668 https://www.exploit-db.com/exploits/35164

Common Weakness Enumeration

No CWE recorded yet

Common Attack Pattern Enumeration and Classification (CAPEC)

No CAPEC recorded yet

Related CVEs

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CVE-2026-7568 (CVSS 6.3) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the met…

References

http://bugs.php.net/53632

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.html

http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053355.html

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-security.484686

http://support.apple.com/kb/HT5002

http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_strtod.c?r1=266327&r2=307095&pathrev=307095

http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/

http://www.openwall.com/lists/oss-security/2011/01/05/2

http://www.openwall.com/lists/oss-security/2011/01/05/8

http://www.openwall.com/lists/oss-security/2011/01/06/5

http://www.openwall.com/lists/oss-security/2023/05/14/3

http://www.redhat.com/support/errata/RHSA-2011-0195.html

http://www.redhat.com/support/errata/RHSA-2011-0196.html

http://www.securityfocus.com/bid/45668

http://www.ubuntu.com/usn/USN-1042-1

http://www.vupen.com/english/advisories/2011/0060

http://www.vupen.com/english/advisories/2011/0066

http://www.vupen.com/english/advisories/2011/0077

http://www.vupen.com/english/advisories/2011/0198

https://exchange.xforce.ibmcloud.com/vulnerabilities/64470

http://bugs.php.net/53632

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.html

http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053355.html

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-security.484686

http://support.apple.com/kb/HT5002

http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_strtod.c?r1=266327&r2=307095&pathrev=307095

http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/

http://www.openwall.com/lists/oss-security/2011/01/05/2

http://www.openwall.com/lists/oss-security/2011/01/05/8

http://www.openwall.com/lists/oss-security/2011/01/06/5

http://www.openwall.com/lists/oss-security/2023/05/14/3

http://www.redhat.com/support/errata/RHSA-2011-0195.html

http://www.redhat.com/support/errata/RHSA-2011-0196.html

http://www.securityfocus.com/bid/45668

http://www.ubuntu.com/usn/USN-1042-1

http://www.vupen.com/english/advisories/2011/0060

http://www.vupen.com/english/advisories/2011/0066

http://www.vupen.com/english/advisories/2011/0077

http://www.vupen.com/english/advisories/2011/0198

https://exchange.xforce.ibmcloud.com/vulnerabilities/64470

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High