| Description: | Summary:
The remote host is missing an update for the 'linux-azure'
package(s) announced via the referenced advisory.
Vulnerability Insight:
USN-3523-1 fixed vulnerabilities in the
Linux kernel for Ubuntu 17.10. This update provides the corresponding updates
for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu
16.04 LTS. Jann Horn discovered that microprocessors utilizing speculative
execution and indirect branch prediction may allow unauthorized memory reads via
sidechannel attacks. This flaw is known as Meltdown. A local attacker could use
this to expose sensitive information, including kernel memory. (CVE-2017-5754)
Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the
Linux kernel did not properly check the relationship between pointer values and
the BPF stack. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2017-17863) Jann Horn
discovered that the Berkeley Packet Filter (BPF) implementation in the Linux
kernel improperly performed sign extension in some situations. A local attacker
could use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16995) Alexei Starovoitov discovered that the Berkeley
Packet Filter (BPF) implementation in the Linux kernel contained a
branch-pruning logic issue around unreachable code. A local attacker could use
this to cause a denial of service. (CVE-2017-17862) Jann Horn discovered that
the Berkeley Packet Filter (BPF) implementation in the Linux kernel mishandled
pointer data values in some situations. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2017-17864)
Affected Software/OS:
linux-azure on Ubuntu 16.04 LTS
Solution:
Please Install the Updated Packages.
CVSS Score:
7.2
CVSS Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
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