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Last updated: Sat May 18 15:41:42 EDT 2013

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National Cyber Awareness System

Vulnerability Summary for CVE-2010-4645

Original release date:01/11/2011
Last revised:08/14/2012
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown

References to Advisories, Solutions, and Tools

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External Source: MLIST
Name: [oss-security] 20110105 possible flaw in widely used strtod.c implementation
Type: Patch Information; Exploit
Hyperlink:http://www.openwall.com/lists/oss-security/2011/01/05/2
External Source: MISC
Name: http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_strtod.c?r1=266327&r2=307095&pathrev=307095
Type: Patch Information
Hyperlink:http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_strtod.c?r1=266327&r2=307095&pathrev=307095
External Source: XF
Name: php-zendstrtod-dos(64470)
Hyperlink:http://xforce.iss.net/xforce/xfdb/64470
External Source: VUPEN
Name: ADV-2011-0198
Hyperlink:http://www.vupen.com/english/advisories/2011/0198
External Source: VUPEN
Name: ADV-2011-0077
Hyperlink:http://www.vupen.com/english/advisories/2011/0077
External Source: VUPEN
Name: ADV-2011-0066
Hyperlink:http://www.vupen.com/english/advisories/2011/0066
External Source: VUPEN
Name: ADV-2011-0060
Type: Advisory
Hyperlink:http://www.vupen.com/english/advisories/2011/0060
External Source: UBUNTU
Name: USN-1042-1
Hyperlink:http://www.ubuntu.com/usn/USN-1042-1
External Source: BID
Name: 45668
Hyperlink:http://www.securityfocus.com/bid/45668
External Source: REDHAT
Name: RHSA-2011:0196
Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-0196.html
External Source: REDHAT
Name: RHSA-2011:0195
Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-0195.html
External Source: MLIST
Name: [oss-security] 20110106 Re: possible flaw in widely used strtod.c implementation
Hyperlink:http://www.openwall.com/lists/oss-security/2011/01/06/5
External Source: MLIST
Name: [oss-security] 20110105 Re: possible flaw in widely used strtod.c implementation
Hyperlink:http://www.openwall.com/lists/oss-security/2011/01/05/8
External Source: MISC
Name: http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/
Hyperlink:http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/
External Source: CONFIRM
Name: http://support.apple.com/kb/HT5002
Hyperlink:http://support.apple.com/kb/HT5002
External Source: SLACKWARE
Name: SSA:2011-010-01
Hyperlink:http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.484686
External Source: SECUNIA
Name: 43189
Hyperlink:http://secunia.com/advisories/43189
External Source: SECUNIA
Name: 43051
Hyperlink:http://secunia.com/advisories/43051
External Source: SECUNIA
Name: 42843
Hyperlink:http://secunia.com/advisories/42843
External Source: SECUNIA
Name: 42812
Hyperlink:http://secunia.com/advisories/42812
External Source: HP
Name: SSRT100802
Hyperlink:http://marc.info/?l=bugtraq&m=133226187115472&w=2
External Source: HP
Name: HPSBMU02752
Hyperlink:http://marc.info/?l=bugtraq&m=133226187115472&w=2
External Source: FEDORA
Name: FEDORA-2011-0321
Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053355.html
External Source: FEDORA
Name: FEDORA-2011-0329
Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053333.html
External Source: APPLE
Name: APPLE-SA-2011-10-12-3
Hyperlink:http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
External Source: MISC
Name: http://hal.archives-ouvertes.fr/docs/00/28/14/29/PDF/floating-point-article.pdf
Hyperlink:http://hal.archives-ouvertes.fr/docs/00/28/14/29/PDF/floating-point-article.pdf
External Source: CONFIRM
Name: http://bugs.php.net/53632
Hyperlink:http://bugs.php.net/53632

Vulnerable software and versions

Nav control imageConfiguration 1
line trunkNav control imageOR
line trunkspacerNav control image* cpe:/a:php:php:5.2.0
line trunkspacerNav control image* cpe:/a:php:php:5.2.1
line trunkspacerNav control image* cpe:/a:php:php:5.2.10
line trunkspacerNav control image* cpe:/a:php:php:5.2.11
line trunkspacerNav control image* cpe:/a:php:php:5.2.12
line trunkspacerNav control image* cpe:/a:php:php:5.2.13
line trunkspacerNav control image* cpe:/a:php:php:5.2.14
line trunkspacerNav control image* cpe:/a:php:php:5.2.2
line trunkspacerNav control image* cpe:/a:php:php:5.2.3
line trunkspacerNav control image* cpe:/a:php:php:5.2.4
line trunkspacerNav control image* cpe:/a:php:php:5.2.5
line trunkspacerNav control image* cpe:/a:php:php:5.2.6
line trunkspacerNav control image* cpe:/a:php:php:5.2.8
line trunkspacerNav control image* cpe:/a:php:php:5.2.9
line trunkspacerNav control image* cpe:/a:php:php:5.2.7
line trunkspacerNav control image* cpe:/a:php:php:5.2.15
line trunkspacerNav control image* cpe:/a:php:php:5.2.16
Nav control imageConfiguration 2
spacerNav control imageOR
spacerspacerNav control image* cpe:/a:php:php:5.3.3
spacerspacerNav control image* cpe:/a:php:php:5.3.0
spacerspacerNav control image* cpe:/a:php:php:5.3.1
spacerspacerNav control image* cpe:/a:php:php:5.3.2
spacerspacerNav control image* cpe:/a:php:php:5.3.4
* Denotes Vulnerable Software
* Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
CVE Standard Vulnerability Entry:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4645