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Sicherheit: Pufferüberlauf in libunwind
Aktuelle Meldungen Distributionen
Name: Pufferüberlauf in libunwind
ID: RHSA-2015:1675-01
Distribution: Red Hat
Plattformen: Red Hat Enterprise Linux OpenStack Platform
Datum: Di, 25. August 2015, 06:49
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3239
Applikationen: libunwind

Originalnachricht

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=====================================================================
Red Hat Security Advisory

Synopsis: Low: libunwind security update
Advisory ID: RHSA-2015:1675-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1675.html
Issue date: 2015-08-24
CVE Names: CVE-2015-3239
=====================================================================

1. Summary:

Updated libunwind packages that fix a security flaw are now available for
Red Hat Enterprise Linux OpenStack Platform 6.0.

Red Hat Product Security has rated this update as having Low 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 OpenStack Platform 6.0 for RHEL 7 - x86_64

3. Description:

Libunwind provides a C ABI to determine the call-chain of a program.

An off by one array indexing error was found in libunwind. It is unlikely
that any exploitable attack vector exists in current builds or supported
usage. (CVE-2015-3239)

This issue was discovered by Paolo Bonzini of Red Hat.

All users of libunwind are advised to upgrade to these updated packages,
which correct this issue.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1232265 - CVE-2015-3239 libunwind: off-by-one in dwarf_to_unw_regnum()

6. Package List:

Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7:

Source:
libunwind-1.1-4.1.el7ost.src.rpm

x86_64:
libunwind-1.1-4.1.el7ost.x86_64.rpm
libunwind-debuginfo-1.1-4.1.el7ost.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-2015-3239
https://access.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2015 Red Hat, Inc.
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