OracleVM 3.0 : xen (OVMSA-2012-0040)
High Nessus Plugin ID 79483
SynopsisThe remote OracleVM host is missing one or more security updates.
DescriptionThe remote OracleVM system is missing necessary patches to address critical security updates :
- console: bounds check whenever changing the cursor due to an escape code The device model used by fully virtualised (HVM) domains, qemu, does not properly handle escape VT100 sequences when emulating certain devices with a virtual console backend. (CVE-2012-3515)
- xen: Don't BUG_ON PoD operations on a non-translated guest. XENMEM_populate_physmap can be called with invalid flags. By calling it with MEMF_populate_on_demand flag set, a BUG can be triggered if a translating paging mode is not being used.
- xen: prevent a 64 bit guest setting reserved bits in DR7 The upper 32 bits of this register are reserved and should be written as zero. (CVE-2012-3494)
SolutionUpdate the affected xen / xen-devel / xen-tools packages.