Debian: DSA-3348-1: qemu security update

    Date02 Sep 2015
    CategoryDebian
    77
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities were discovered in qemu, a fast processor emulator. CVE-2015-3214
    
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    Debian Security Advisory DSA-3348-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    September 02, 2015                    https://www.debian.org/security/faq
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    Package        : qemu
    CVE ID         : CVE-2015-3214 CVE-2015-5154 CVE-2015-5165 CVE-2015-5225 
                     CVE-2015-5745
    Debian Bug     : 793811 794610 795087 795461 796465
    
    Several vulnerabilities were discovered in qemu, a fast processor
    emulator.
    
    CVE-2015-3214
    
        Matt Tait of Google's Project Zero security team discovered a flaw
        in the QEMU i8254 PIT emulation. A privileged guest user in a guest
        with QEMU PIT emulation enabled could potentially use this flaw to
        execute arbitrary code on the host with the privileges of the
        hosting QEMU process.
    
    CVE-2015-5154
    
        Kevin Wolf of Red Hat discovered a heap buffer overflow flaw in the
        IDE subsystem in QEMU while processing certain ATAPI commands. A
        privileged guest user in a guest with the CDROM drive enabled could
        potentially use this flaw to execute arbitrary code on the host with
        the privileges of the hosting QEMU process.
    
    CVE-2015-5165
    
        Donghai Zhu discovered that the QEMU model of the RTL8139 network
        card did not sufficiently validate inputs in the C+ mode offload
        emulation, allowing a malicious guest to read uninitialized memory
        from the QEMU process's heap.
    
    CVE-2015-5225
    
        Mr Qinghao Tang from QIHU 360 Inc. and Mr Zuozhi from Alibaba Inc
        discovered a buffer overflow flaw in the VNC display driver leading
        to heap memory corruption. A privileged guest user could use this
        flaw to mount a denial of service (QEMU process crash), or
        potentially to execute arbitrary code on the host with the
        privileges of the hosting QEMU process.
    
    CVE-2015-5745
    
        A buffer overflow vulnerability was discovered in the way QEMU
        handles the virtio-serial device. A malicious guest could use this
        flaw to mount a denial of service (QEMU process crash).
    
    For the oldstable distribution (wheezy), these problems have been fixed
    in version 1.1.2+dfsg-6a+deb7u9. The oldstable distribution is only
    affected by CVE-2015-5165 and CVE-2015-5745.
    
    For the stable distribution (jessie), these problems have been fixed in
    version 1:2.1+dfsg-12+deb8u2.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 1:2.4+dfsg-1a.
    
    We recommend that you upgrade your qemu 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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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