drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen beliebiger Kommandos in Linux
Name: |
Ausführen beliebiger Kommandos in Linux |
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ID: |
RHSA-2016:2074-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Di, 18. Oktober 2016, 16:47 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2016-4470 |
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Applikationen: |
Linux |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2016:2074-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2074.html Issue date: 2016-10-18 CVE Names: CVE-2016-4470 =====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Server AUS (v. 6.5) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* A flaw was found in the Linux kernel's keyring handling code, where in key_reject_and_link() an uninitialized variable would eventually lead to arbitrary free address which could allow attacker to use a use-after-free style attack. (CVE-2016-4470, Important)
This issue was discovered by David Howells (Red Hat Inc.).
Bug Fix(es):
* Previously, the BUG_ON() signal appeared in the fs_clear_inode() function where the nfs_have_writebacks() function reported a positive value for nfs_inode->npages. As a consequence, a kernel panic occurred. This update performs a serialization by holding the inode i_lock over the check of PagePrivate and locking the request, which fixes this bug. (BZ#1365161)
4. Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1341716 - CVE-2016-4470 kernel: Uninitialized variable in request_key handling causes kernel crash in error handling path
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 6.5):
Source: kernel-2.6.32-431.74.1.el6.src.rpm
noarch: kernel-abi-whitelists-2.6.32-431.74.1.el6.noarch.rpm kernel-doc-2.6.32-431.74.1.el6.noarch.rpm kernel-firmware-2.6.32-431.74.1.el6.noarch.rpm
x86_64: kernel-2.6.32-431.74.1.el6.x86_64.rpm kernel-debug-2.6.32-431.74.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-431.74.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.74.1.el6.x86_64.rpm kernel-devel-2.6.32-431.74.1.el6.x86_64.rpm kernel-headers-2.6.32-431.74.1.el6.x86_64.rpm perf-2.6.32-431.74.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.5):
Source: kernel-2.6.32-431.74.1.el6.src.rpm
x86_64: kernel-debug-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.74.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm python-perf-2.6.32-431.74.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.74.1.el6.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-4470 https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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