A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.
Red Hat Enterprise Virtualization Manager 3.6 and earlier gives valid SLAAC IPv6 addresses to interfaces when "boot protocol" is set to None, which might allow remote attackers to communicate with a system designated to be unreachable.
Red Hat Enterprise Virtualization (RHEV) Manager before 3.5.1 uses weak permissions on the directories shared by the ovirt-engine-dwhd service and a plugin during service startup, which allows local users to obtain sensitive information by reading files in the directory.
Red Hat Enterprise Virtualization (RHEV) Manager before 3.5.1 ignores the permission to deny snapshot creation during live storage migration between domains, which allows remote authenticated users to cause a denial of service (prevent host start) by creating a long snapshot chain.
The oVirt Engine backend module, as used in Red Hat Enterprise Virtualization Manager before 3.4.2, uses an "insecure DocumentBuilderFactory," which allows remote attackers to read arbitrary files or possibly have other unspecified impact via a crafted XML/RSDL document, related to an XML External Entity (XXE) issue.
The remote-viewer in Red Hat Enterprise Virtualization Manager (RHEV-M) before 3.3, when using a native SPICE client invocation method, initially makes insecure connections to the SPICE server, which allows man-in-the-middle attackers to spoof the SPICE server.
Red Hat Enterprise Virtualization Manager (RHEVM) before 3.2 does not properly check permissions for the target storage domain, which allows attackers to cause a denial of service (disk space consumption) by cloning a VM from a snapshot.
The domain management tool (rhevm-manage-domains) in Red Hat Enterprise Virtualization Manager (RHEV-M) 3.1 and earlier, when the validate action is enabled, logs the administrative password to a world-readable log file, which allows local users to obtain sensitive information by reading this file.
The MoveDisk command in Red Hat Enterprise Virtualization Manager (RHEV-M) 3.1 and earlier does not properly check permissions on storage domains, which allows remote authenticated storage admins to cause a denial of service (free space consumption of other storage domains) via unspecified vectors.
Red Hat Enterprise Virtualization Manager (RHEV-M) before 3.1, when moving disks between storage domains, does not properly wipe-after-delete, which prevents disks from being securely deleted and might allow local users to obtain sensitive information via unspecified vectors.