Otkrivena je ranjivost programskog paketa FreeType koja se može iskoristiti za udaljeno izvođenje DoS napada i pokretanje proizvoljnog programskog koda.
Ranjivost je uzrokovana greškom u funkciji "t1_decoder_parse_charstrings()" u datoteci "src/psaux/t1decode.c" koja rezultira korupcijom memorije.
Posljedica:
Navođenjem korisnika na otvaranje datoteke s posebno oblikovanim Type 1 fontom, moguće je udaljeno izvođenje DoS napada i pokretanje zlonamjernog programskog koda.
Rješenje:
Korisnicima se savjetuje korištenje odgovarajućih programskih zakrpi.
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Fedora Update Notification
FEDORA-2011-9542
2011-07-22 19:05:47
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Name : freetype
Product : Fedora 15
Version : 2.4.4
Release : 5.fc15
URL : http://www.freetype.org
Summary : A free and portable font rendering engine
Description :
The FreeType engine is a free and portable font rendering
engine, developed to provide advanced font support for a variety of
platforms and environments. FreeType is a library which can open and
manages font files as well as efficiently load, hint and render
individual glyphs. FreeType is not a font server or a complete
text-rendering library.
--------------------------------------------------------------------------------
Update Information:
This update fixes CVE-2011-0226.
--------------------------------------------------------------------------------
ChangeLog:
* Wed Jul 20 2011 Marek Kasik <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> 2.4.4-5
- Add freetype-2.4.4-CVE-2011-0226.patch
(Add better argument check for `callothersubr'.)
- based on patches by Werner Lemberg,
Alexei Podtelezhnikov and Matthias Drochner
- Resolves: #723469
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References:
[ 1 ] Bug #722701 - CVE-2011-0226 freetype: postscript type1 font parsing
vulnerability
https://bugzilla.redhat.com/show_bug.cgi?id=722701
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This update can be installed with the "yum" update program. Use
su -c 'yum update freetype' 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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