CVE-2017-2620

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CVE-2017-2620

Summary:

Details: Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.

References: https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html, http://rhn.redhat.com/errata/RHSA-2017-0328.html, http://rhn.redhat.com/errata/RHSA-2017-0329.html, http://rhn.redhat.com/errata/RHSA-2017-0330.html, http://rhn.redhat.com/errata/RHSA-2017-0331.html, http://rhn.redhat.com/errata/RHSA-2017-0332.html, http://rhn.redhat.com/errata/RHSA-2017-0333.html, http://rhn.redhat.com/errata/RHSA-2017-0334.html, http://rhn.redhat.com/errata/RHSA-2017-0350.html, http://rhn.redhat.com/errata/RHSA-2017-0351.html, http://rhn.redhat.com/errata/RHSA-2017-0352.html, http://rhn.redhat.com/errata/RHSA-2017-0396.html, http://rhn.redhat.com/errata/RHSA-2017-0454.html, http://www.openwall.com/lists/oss-security/2017/02/21/1, http://www.securityfocus.com/bid/96378, http://www.securitytracker.com/id/1037870, https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html, https://security.gentoo.org/glsa/201703-07, https://security.gentoo.org/glsa/201704-01, https://support.citrix.com/article/CTX220771, https://xenbits.xen.org/xsa/advisory-209.html, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2620, https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html