ESB-2019.0629 - [Debian] qemu: Multiple vulnerabilities 2019-03-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0629
                     [DLA 1694-1] qemu security update
                               1 March 2019

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

Product:           qemu
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Denial of Service        -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-6778 CVE-2018-16872 CVE-2018-12617

Reference:         ESB-2019.0607
                   ESB-2019.0557
                   ESB-2019.0502.3
                   ESB-2019.0496

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2019/02/msg00041.html

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Package        : qemu
Version        : 1:2.1+dfsg-12+deb8u10
CVE ID         : CVE-2018-12617 CVE-2018-16872 CVE-2019-6778
Debian Bug     : 916397, 902725, 921525

Several vulnerabilities were found in QEMU, a fast processor emulator:

CVE-2018-12617

    The qmp_guest_file_read function (qga/commands-posix.c) is affected
    by an integer overflow and subsequent memory allocation failure. This
    weakness might be leveraged by remote attackers to cause denial of
    service (application crash).

CVE-2018-16872

    The usb_mtp_get_object, usb_mtp_get_partial_object and
    usb_mtp_object_readdir functions (hw/usb/dev-mtp.c) are affected by a
    symlink attack. Remote attackers might leverage this vulnerability to
    perform information disclosure.

CVE-2019-6778

    The tcp_emu function (slirp/tcp_subr.c) is affected by a heap buffer
    overflow caused by insufficient validation of available space in the
    sc_rcv->sb_data buffer. Remote attackers might leverage this flaw to
    cause denial of service, or any other unspecified impact.

For Debian 8 "Jessie", these problems have been fixed in version
1:2.1+dfsg-12+deb8u10.

We recommend that you upgrade your qemu packages.

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