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On 2011-01-06T20:30:39+00:00 Vincent wrote:

A flaw in how PHP handled the numeric value 2.2250738585072011e-308 was
reported [1].  If a script were to assign this value to a variable, it
could cause PHP to hang (infinite loop).  This issue has been fixed in
upstream PHP [2] 5.2.17 and 5.3.5.

[1] http://bugs.php.net/53632
[2] http://svn.php.net/viewvc?view=revision&revision=307095

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On 2011-01-06T20:56:55+00:00 Vincent wrote:

I have not been able to reproduce this on RHEL4 (4.3.9) or RHEL5 (5.1.6)
on x86.  I have reproduced it on RHEL6 (5.3.2) and Fedora 14 (5.3.4),
both x86.  It does not reproduce on Fedora 14 x86_64, so this is
x86-only.

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https://bugs.launchpad.net/ubuntu/+source/php5/+bug/697181/comments/5

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On 2011-01-06T21:11:38+00:00 MichaƂ wrote:

Please add also

r307168 | pajoye | 2011-01-06 18:08:46 +0100 (czw) | 1 linia

- fix vc6 random behavior for Fix bug #53632 with x87 fpu

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https://bugs.launchpad.net/ubuntu/+source/php5/+bug/697181/comments/6

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On 2011-01-07T00:24:29+00:00 Vincent wrote:

Note that upstream has put up a checking script to see if your system is
vulnerable:  http://www.php.net/distributions/test_bug53632.txt

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https://bugs.launchpad.net/ubuntu/+source/php5/+bug/697181/comments/7

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On 2011-01-07T08:54:21+00:00 Joe wrote:

Michal, r307168 is MSVC-specific and won't have any effect on Linux.

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https://bugs.launchpad.net/ubuntu/+source/php5/+bug/697181/comments/8

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On 2011-02-03T18:56:33+00:00 errata-xmlrpc wrote:

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0195 https://rhn.redhat.com/errata/RHSA-2011-0195.html

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https://bugs.launchpad.net/ubuntu/+source/php5/+bug/697181/comments/14

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On 2011-02-03T19:17:11+00:00 errata-xmlrpc wrote:

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0196 https://rhn.redhat.com/errata/RHSA-2011-0196.html

Reply at:
https://bugs.launchpad.net/ubuntu/+source/php5/+bug/697181/comments/15

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On 2011-02-03T19:28:28+00:00 Vincent wrote:

Statement:

This issue leads to a temporary denial of service (high CPU consumption)
when a PHP script handles numeric values from untrusted user input. It
does not affect the versions of PHP as shipped with Red Hat Enterprise
Linux 3, 4 or 5.  It  did affect the PHP 5.3 (php53) package on Red Hat
Enterprise Linux 5.

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https://bugs.launchpad.net/ubuntu/+source/php5/+bug/697181/comments/16


** Changed in: php5 (Fedora)
       Status: Unknown => Fix Released

** Changed in: php5 (Fedora)
   Importance: Unknown => Medium

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https://bugs.launchpad.net/bugs/697181

Title:
  DoS: Infinite loop processing 2.2250738585072011e-308

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