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  1.     
    #1
    Member
    Website's:
    RobustVPS.net

    Default Centos 6 / Rhel 6 == Security hole -- Privledge esclation (CVE-2012-0056)

    Thought this could be handy to make people aware..



    https://rhn.redhat.com/errata/RHSA-2012-0052.html

    * 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)
    https://www.redhat.com/security/data...2012-0056.html


    This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as it did not backport the upstream commit 198214a7ee. A future kernel update for Red Hat Enterprise MRG may address this issue. This has been addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2012-0052.html.
    How to test if vuln

    Ref: https://access.redhat.com/kb/docs/DOC-69129


    wget "https://bugzilla.redhat.com/attachment.cgi?id=556461" -O test.c
    gcc test.c -o test
    ./test
    Ksplice has an update out

    Synopsis: RHSA-2012:0052-1 can now be patched using Ksplice
    CVEs: CVE-2012-0056
    Red Hat Security Advisory Severity: Important

    Systems running Red Hat Enterprise Linux 6, CentOS 6, and Scientific
    Linux 6 can now use Ksplice to patch against the latest Red Hat
    Security Advisory, RHSA-2012:0052-1.

    INSTALLING THE UPDATES

    We recommend that all users of Ksplice Uptrack on RHEL 6, CentOS 6,
    and Scientific Linux 6 install these updates. You can install these
    updates by running:

    # /usr/sbin/uptrack-upgrade -y
    On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
    these updates will be installed automatically and you do not need to
    take any additional action.


    DESCRIPTION

    * CVE-2012-0056: Privilege escalation in /proc/[pid]/mem writing.

    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 for
    further information. (CVE-2012-0056, Important)

    SUPPORT

    Ksplice support is available at ksplice-support_ww@oracle.com.
    RobustVPS Reviewed by RobustVPS on . Centos 6 / Rhel 6 == Security hole -- Privledge esclation (CVE-2012-0056) Thought this could be handy to make people aware.. https://rhn.redhat.com/errata/RHSA-2012-0052.html * It was found that permissions were not checked properly in the Linux kernel when handling the /proc//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, Rating: 5
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  3.     
    #2
    Banned
    Website's:
    xsl.tel xsltel.com
    thanks for the heads up

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