drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Preisgabe von Informationen in RT-Preempt-Realtime-Patch
Name: |
Preisgabe von Informationen in RT-Preempt-Realtime-Patch |
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ID: |
RHSA-2016:1632-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Do, 18. August 2016, 23:25 |
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Referenzen: |
https://access.redhat.com/security/cve/CVE-2016-5696 |
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Applikationen: |
RT-Preempt-Realtime-Patch |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2016:1632-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1632.html Issue date: 2016-08-18 CVE Names: CVE-2016-5696 =====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 7.
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 Realtime (v. 7) - noarch, x86_64 Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64
3. Description:
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
It was found that the RFC 5961 challenge ACK rate limiting as implemented in the Linux kernel's networking subsystem allowed an off-path attacker to leak certain information about a given connection by creating congestion on the global challenge ACK rate limit counter and then measuring the changes by probing packets. An off-path attacker could use this flaw to either terminate TCP connection and/or inject payload into non-secured TCP connection between two endpoints on the network. (CVE-2016-5696, Important)
Red Hat would like to thank Yue Cao from Cyber Security Group in the CS department of University of California, Riverside, for reporting this issue.
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/):
1354708 - CVE-2016-5696 kernel: challenge ACK counter information disclosure.
6. Package List:
Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source: kernel-rt-3.10.0-327.28.3.rt56.235.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-327.28.3.rt56.235.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-devel-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-kvm-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm
Red Hat Enterprise Linux Realtime (v. 7):
Source: kernel-rt-3.10.0-327.28.3.rt56.235.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-327.28.3.rt56.235.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-devel-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-327.28.3.rt56.235.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-327.28.3.rt56.235.el7.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-2016-5696 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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