Ispravljen je sigurnosni propust jezgre operacijskog sustava Red Hat Enterprise Linux 6 kojeg je lokalni zlonamjerni korisnik mogao iskoristiti za dobivanje većih privilegija.
Paket:
Linux kernel 2.6.x
Operacijski sustavi:
Red Hat Enterprise Linux 6
Kritičnost:
4.4
Problem:
nepravilno rukovanje ovlastima
Iskorištavanje:
lokalno
Posljedica:
dobivanje većih privilegija
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-0056
Izvorni ID preporuke:
RHSA-2012:0052-01
Izvor:
Red Hat
Problem:
Propust je posljedica nepravile provjere ovlasti pri rukovanju s "/proc/[pid]/mem".
Posljedica:
Lokalni napadač može iskoristiti navedeni propust za dobivanje većih privilegija.
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2012:0052-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0052.html
Issue date: 2012-01-23
CVE Names: CVE-2012-0056
=====================================================================
1. Summary:
Updated kernel packages that fix one security issue and three bugs are now
available for for Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issue:
* It was found that permissions were not checked properly in the Linux
kernel when handling the /proc/[pid]/mem writing functionality. A local,
unprivileged user could use this flaw to escalate their privileges. Refer
to Red Hat Knowledgebase article DOC-69129, linked to in the References,
for further information. (CVE-2012-0056, Important)
Red Hat would like to thank JÄ
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