U radu programskog paketa PHP uočene su i ispravljene dvije sigurnosne ranjivosti. Udaljeni napadač spomenute je ranjivosti mogao iskoristiti za DoS (eng. Denial of Service) napad te otkrivanje proizvoljnih podataka iz memorije.
Paket:
PHP 5.3.x
Operacijski sustavi:
Fedora 15
Kritičnost:
6.4
Problem:
cjelobrojno prepisivanje, neodgovarajuća provjera ulaznih podataka
Sigurnosne ranjivosti se javljaju zbog cjelobrojno prepisivanja u funkciji "exif_process_IFD_TAG" te zbog neodgovarajuće provjere i sprječavanja kolizije hash vrijednosti.
Posljedica:
Posljedice napada su otkrivanje osjetljivih podataka i napad uskraćivanjem usluga (DoS).
Rješenje:
Svim se korisnicima savjetuje korištenje njegove najnovije inačice.
--------------------------------------------------------------------------------
Fedora Update Notification
FEDORA-2012-0420
2012-01-14 03:34:45
--------------------------------------------------------------------------------
Name : php
Product : Fedora 15
Version : 5.3.9
Release : 1.fc15
URL : http://www.php.net/
Summary : PHP scripting language for creating dynamic web sites
Description :
PHP is an HTML-embedded scripting language. PHP attempts to make it
easy for developers to write dynamically generated web pages. PHP also
offers built-in database integration for several commercial and
non-commercial database management systems, so writing a
database-enabled webpage with PHP is fairly simple. The most common
use of PHP coding is probably as a replacement for CGI scripts.
The php package contains the module which adds support for the PHP
language to Apache HTTP Server.
--------------------------------------------------------------------------------
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.> 5.3.9-1
- update to 5.3.9
http://www.php.net/ChangeLog-5.php#5.3.9
- fix owner of /var/log/php-fpm (bug #773077)
- add max_input_vars, max_file_uploads, zend.enable_gc to php.ini
- drop patch4, use --libdir to use /usr/lib*/php/build
* Wed Sep 28 2011 Remi Collet <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> 5.3.8-3
- revert is_a() to php <= 5.3.6 behavior (from upstream)
with new option (allow_string) for new behavior
* Tue Aug 23 2011 Remi Collet <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> 5.3.8-1
- update to 5.3.8
http://www.php.net/ChangeLog-5.php#5.3.8
* Thu Aug 18 2011 Remi Collet <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> 5.3.7-1
- update to 5.3.7
http://www.php.net/ChangeLog-5.php#5.3.7
- enable mhash extension (emulated by hash extension)
--------------------------------------------------------------------------------
References:
[ 1 ] 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' 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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