news 28 Posted May 11, 2017 Package : qemu-kvm Version : 1.1.2+dfsg-6+deb7u21 CVE ID : CVE-2016-9603 CVE-2017-7718 CVE-2017-7980 Multiple vulnerabilities have been discovered in qemu-kvm, a full virtualization solution on x86 hardware based on Quick Emulator(Qemu). The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2016-9603 qemu-kvm built with the Cirrus CLGD 54xx VGA Emulator and the VNC display driver support is vulnerable to a heap buffer overflow issue. It could occur when Vnc client attempts to update its display after a vga operation is performed by a guest. A privileged user/process inside guest could use this flaw to crash the Qemu process resulting in DoS OR potentially leverage it to execute arbitrary code on the host with privileges of the Qemu process. CVE-2017-7718 qemu-kvm built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt functions cirrus_bitblt_rop_fwd_transp_ and/or cirrus_bitblt_rop_fwd_. A privileged user inside guest could use this flaw to crash the Qemu process resulting in DoS. CVE-2017-7980 qemu-kvm built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds r/w access issues. It could occur while copying VGA data via various bitblt functions. A privileged user inside guest could use this flaw to crash the Qemu process resulting in DoS OR potentially execute arbitrary code on a host with privileges of Qemu process on the host. For Debian 7 "Wheezy", these problems have been fixed in version 1.1.2+dfsg-6+deb7u21. We recommend that you upgrade your qemu-kvm 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 Share this post Link to post
