U radu programskog paketa php-eaccelerator otkrivena su dva propusta koja zlonamjerni napadači mogu iskoristiti za napad uskraćivanjem usluga i otkrivanje osjetljivih informacija.
Paket:
php-eaccelerator 0.x
Operacijski sustavi:
Fedora 16
Kritičnost:
6.4
Problem:
neodgovarajuće rukovanje memorijom, pogreška u programskoj funkciji, preljev međuspremnika
Sigurnosni nedostatak vezan je uz pogrešku u programskoj funkciji "exif_process_IFD_TAG" koja uzrokuje preljev međuspremnika i neodgovarajuće rukovanje memorijom.
Posljedica:
Udaljeni napadač ranjivosti može iskoristiti za DoS napad i čitanje sadržaja proizvoljnih memorijskih lokacija.
Rješenje:
Izdana je nadogradnja koja otklanja opisane propuste pa se korisnicima savjetuje njena primjena.
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Fedora Update Notification
FEDORA-2012-0504
2012-01-14 03:39:06
--------------------------------------------------------------------------------
Name : php-eaccelerator
Product : Fedora 16
Version : 0.9.6.1
Release : 9.fc16.1
URL : http://eaccelerator.net/
Summary : PHP accelerator, optimizer, encoder and dynamic content cacher
Description :
eAccelerator is a further development of the MMCache PHP Accelerator & Encoder.
It increases performance of PHP scripts by caching them in compiled state, so
that the overhead of compiling is almost completely eliminated.
--------------------------------------------------------------------------------
Update Information:
Security Enhancements and Fixes in PHP 5.3.9:
* Added max_input_vars directive to prevent attacks based on hash collisions.
(CVE-2011-4885)
* Fixed bug #60150 (Integer overflow during the parsing of invalid exif header).
(CVE-2011-4566)
Full upstream changelog :
http://www.php.net/ChangeLog-5.php#5.3.9
--------------------------------------------------------------------------------
ChangeLog:
* Wed Jan 11 2012 Remi Collet <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> - 1:0.9.6.1-9.1
- rebuild against PHP 5.3.9
--------------------------------------------------------------------------------
References:
[ 1 ] Bug #773077 - php-fpm: buggy(?) logrotate config
https://bugzilla.redhat.com/show_bug.cgi?id=773077
[ 2 ] Bug #770823 - CVE-2011-4885 php: hash table collisions CPU usage DoS
(oCERT-2011-003) [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=770823
--------------------------------------------------------------------------------
This update can be installed with the "yum" update program. Use
su -c 'yum update php-eaccelerator' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.
All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
--------------------------------------------------------------------------------
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