Ispravljena je sigurnosna ranjivost kod programskog paketa libpng. Udaljeni zloćudni korisnik navedenu nepravilnost može iskoristiti za napad uskraćivanjem usluga (DoS).
Paket:
libpng 1.x
Operacijski sustavi:
Fedora 16
Kritičnost:
7.5
Problem:
preljev međuspremnika
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-3026
Izvorni ID preporuke:
FEDORA-2012-1922
Izvor:
Fedora
Problem:
Sigurnosni propust se javlja zbog preljeva međuspremnika u komponenti "png_decompress_chunk".
Posljedica:
Udaljeni napadač navedeni nedostatak može iskoristiti za DoS (eng. Denial of Service) napad putem nepoznatih vektora.
Rješenje:
Rješenje problema sigurnosti je nadogradnja na novije inačice.
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Fedora Update Notification
FEDORA-2012-1922
2012-02-17 23:22:03
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Name : libpng
Product : Fedora 16
Version : 1.2.46
Release : 2.fc16
URL : http://www.libpng.org/pub/png/
Summary : A library of functions for manipulating PNG image format files
Description :
The libpng package contains a library of functions for creating and
manipulating PNG (Portable Network Graphics) image format files. PNG
is a bit-mapped graphics format similar to the GIF format. PNG was
created to replace the GIF format, since GIF uses a patented data
compression algorithm.
Libpng should be installed if you need to manipulate PNG format image
files.
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Update Information:
Fix nasty buffer overrun bug, CVE-2011-3026
--------------------------------------------------------------------------------
ChangeLog:
* Thu Feb 16 2012 Tom Lane <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.> 2:1.2.46-2
- Fix CVE-2011-3026
Resolves: #791183
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References:
[ 1 ] Bug #790737 - CVE-2011-3026 libpng: Heap-buffer-overflow in
png_decompress_chunk (MFSA 2012-11)
https://bugzilla.redhat.com/show_bug.cgi?id=790737
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This update can be installed with the "yum" update program. Use
su -c 'yum update libpng' 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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