SynopsisThe remote host is affected by multiple vulnerabilities.
DescriptionThe remote Mac OS X host is running EFI firmware that is affected by multiple vulnerabilities :
- An insufficient locking issue exists, when resuming from sleep states, which allows a local attacker to write to the EFI flash memory by using an crafted application with root privileges. (CVE-2015-3692)
- A flaw exists due to lax restrictions on memory refresh rates, which allows a specially crafted process to corrupt the memory of some DDR3 SDRAM devices by inducing bit flips in page table entries (PTEs), also known as a 'row-hammer attack'. An attacker can exploit this to gain elevated privileges by manipulating the PTEs. (CVE-2015-3693)
SolutionInstall Mac EFI Security Update 2015-001.