Qemu: cirrus: heap buffer overflow via vnc connection

A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash...

Qemu: display: cirrus: OOB r/w access issues in bitblt routines

An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data via various bitblt functions. A privileged user inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on...

Qemu: display: cirrus: OOB read access issue

An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions for example, cirrusbitbltropfwdtransp. A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in...

Qemu: display: cirrus: OOB read access issue

An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions for example, cirrusbitbltropfwdtransp. A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in...

Qemu: cirrus: heap buffer overflow via vnc connection

A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash...

Qemu: display: cirrus: OOB read access issue

An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions for example, cirrusbitbltropfwdtransp. A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in...

Qemu: display: cirrus: OOB r/w access issues in bitblt routines

An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data via various bitblt functions. A privileged user inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on...

DEBIAN-CVE-2016-9922

The cirrusdocopy function in hw/display/cirrusvga.c in QEMU aka Quick Emulator, when cirrus graphics mode is VGA, allows local guest OS privileged users to cause a denial of service divide-by-zero error and QEMU process crash via vectors involving blit pitch values...

UBUNTU-CVE-2016-9922

The cirrusdocopy function in hw/display/cirrusvga.c in QEMU aka Quick Emulator, when cirrus graphics mode is VGA, allows local guest OS privileged users to cause a denial of service divide-by-zero error and QEMU process crash via vectors involving blit pitch values...

qemu security update

CentOS Errata and Security Advisory CESA-2017:0621 An update for qemu-kvm is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

FreeBSD : xen-tools -- Cirrus VGA Heap overflow via display refresh (af19ecd0-0f6a-11e7-970f-002590263bf5)

The Xen Project reports : A privileged user within the guest VM can cause a heap overflow in the device model process, potentially escalating their privileges to that of the device model process. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text and package checks in this...

qemu-kvm: Out-of-bounds read when creating weird vga screen surface

An integer overflow flaw and an out-of-bounds read flaw were found in the way QEMU's VGA emulator set certain VGA registers while in VBE mode. A privileged guest user could use this flaw to crash the QEMU process instance...

Fedora 25 : xen (2017-3d16d348eb)

Cirrus VGA Heap overflow via display refresh XSA-211, CVE-2016-9603 1432041 Qemu: usb: an infinite loop issue in ohciserviceedlist CVE-2017-6505 1429433 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has...

SUSE-SU-2017:0718-1 Security update for xen

This update for xen fixes several issues. These security issues were fixed: - CVE-2016-10155: The virtual hardware watchdog 'wdti6300esb' was vulnerable to a memory leakage issue allowing a privileged user to cause a DoS and/or potentially crash the Qemu process on the host bsc1024183 -...

Cirrus VGA Heap overflow via display refresh

ISSUE DESCRIPTION When a graphics update command gets passed to the VGA emulator, there are 3 possible modes that can be used to update the display: blank - Clears the display text - Treats the display as showing text graph - Treats the display as showing graphics After the display geometry gets...

CVE-2016-9603 - Citrix XenServer Security Update

Description of Problem A security issue has been identified within Citrix XenServer. This issue could, if exploited, allow the administrator of an HVM guest VM to compromise the host. The following vulnerability has been addressed: CVE-2016-9603 High: QEMU: Cirrus VGA Heap overflow via display...

SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:0625-1)

This update for qemu fixes several issues. These security issues were fixed : - CVE-2017-5898: The CCID Card device emulator support was vulnerable to an integer overflow flaw allowing a privileged user to crash the Qemu process on the host resulting in DoS bsc1023907. - CVE-2017-5857: The Virtio...

Qemu: display: cirrus: oob access while doing bitblt copy backward mode

Quick emulator QEMU 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 copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or...

Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo

Quick emulator QEMU 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 cirrusbitbltcputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute...

Important: Red Hat Security Advisory: kvm security update

An update for kvm is now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the C...