Izdana je nova inačica programskog paketa gnash. Otklonjena je ranjivost koja potencijalnim napadačima omogućuje izvršavanje proizvoljnog programskog koda.
Propust cjelobrojnog prepisivanja u programskom paketu gnash javlja se zbog nepravilnosti funkciji "GnashImage::size()" koja nedovoljno provjerava ulazne SWF datoteke.
Posljedica:
Napadač bi mogao iskoristiti propust, ukoliko navede korisnika na otvaranje posebno oblikovane datoteke, za pokretanje proizvoljnog programskog koda i rušenje aplikacije.
Rješenje:
Svim se korisnicima preporuča primjena odgovarajuće nadogradnje.
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Fedora Update Notification
FEDORA-2012-3837
2012-03-16 02:32:10
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Name : gnash
Product : Fedora 17
Version : 0.8.10
Release : 2.fc17
URL : http://www.gnu.org/software/gnash/
Summary : GNU flash movie player
Description :
Gnash is capable of reading up to SWF v9 files and op-codes, but primarily
supports SWF v7, with better SWF v8 and v9 support under heavy development.
Gnash includes initial parser support for SWF v8 and v9. Not all
ActionScript 2 classes are implemented yet, but all of the most heavily
used ones are. Many ActionScript 2 classes are partially implemented;
there is support for all of the commonly used methods of each
class.
--------------------------------------------------------------------------------
Update Information:
Fix CVE-2012-1175
--------------------------------------------------------------------------------
References:
[ 1 ] Bug #803443 - CVE-2012-1175 gnash: integer overflow vulnerability
https://bugzilla.redhat.com/show_bug.cgi?id=803443
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This update can be installed with the "yum" update program. Use
su -c 'yum update gnash' 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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