ESB-2017.2654 - [Linux][Debian] libvirt: Reduced security - Remote/unauthenticated 2017-10-20

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2654
                          libvirt security update
                              20 October 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libvirt
Publisher:         Debian
Operating System:  Debian GNU/Linux 9
                   Linux variants
Impact/Access:     Reduced Security -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-1000256  

Original Bulletin: 
   http://www.debian.org/security/2017/dsa-4003

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running libvirt check for an updated version of the software for 
         their operating system.

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Debian Security Advisory DSA-4003-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
October 19, 2017                      https://www.debian.org/security/faq
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Package        : libvirt
CVE ID         : CVE-2017-1000256
Debian Bug     : 878799

Daniel P. Berrange reported that Libvirt, a virtualisation abstraction
library, does not properly handle the default_tls_x509_verify (and
related) parameters in qemu.conf when setting up TLS clients and servers
in QEMU, resulting in TLS clients for character devices and disk devices
having verification turned off and ignoring any errors while validating
the server certificate.

More informations in https://security.libvirt.org/2017/0002.html .

For the stable distribution (stretch), this problem has been fixed in
version 3.0.0-4+deb9u1.

For the unstable distribution (sid), this problem has been fixed in
version 3.8.0-3.

We recommend that you upgrade your libvirt packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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