70370 : PHP strtod.c zend_strtod Function x87 FPU Register DoS
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Views This Week Views All Time Added to OSVDB Last Modified Modified (since 2008) Percent Complete
5 1617 over 2 years ago 8 months ago 13 times 100%

Timeline
Disclosure Date
2010-12-30

Description

PHP contains a flaw in strtod.c, as used in the function 'zend_strtod' that may allow a context-dependent denial of service. This may allow an attacker to cause an infinite loop denial of service via a certain floating-point value in scientific notation, which x87 FPU registers fail to handle properly.

Classification

 Location: Local / Remote, Context Dependent
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Upgrade
Exploit: Exploit Public
Disclosure: Vendor Verified

Solution

Upgrade to version 5.2.17, 5.3.5 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products
The PHP Group
PHP
 5.2.16
5.3.1
5.3.4

References

Tools & Filters
51439
5740

Credit

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2011-01-11 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_1

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