Vulmon
Amazon Linux AMI Security Advisory: ALAS-2016-669
Advisory Release Date: 2016-03-16 16:30 Pacific
Advisory Updated Date: 2016-12-23 21:35 Pacific
When running as a Xen 64-bit PV guest, user mode processes not supposed to be able to access I/O ports may be granted such permission, potentially resulting in one or more of in-guest privilege escalation, guest crashes (Denial of Service), or in-guest information leaks. (CVE-2016-3157)
In some cases, the kernel did not correctly fix backward jumps in a new eBPF program, which could allow arbitrary reads. (CVE-2016-2383)
The kernel incorrectly accounted for the number of in-flight fds over a unix domain socket to the original opener of the file descriptor. Another process could arbitrarily deplete the original file opener's maximum open files resource limit. (CVE-2016-2550)
A resource-exhaustion vulnerability was found in the kernel, where an unprivileged process could allocate and accumulate far more file descriptors than the process' limit. A local, unauthenticated user could exploit this flaw by sending file descriptors over a Unix socket and then closing them to keep the process' fd count low, thereby creating kernel-memory or file-descriptors exhaustion (denial of service). (CVE-2016-2847)
Affected Packages:
kernel
Issue Correction:
Run yum update kernel to update your system.
i686:
perf-debuginfo-4.1.19-24.31.amzn1.i686
kernel-headers-4.1.19-24.31.amzn1.i686
kernel-devel-4.1.19-24.31.amzn1.i686
kernel-debuginfo-common-i686-4.1.19-24.31.amzn1.i686
kernel-tools-devel-4.1.19-24.31.amzn1.i686
kernel-tools-debuginfo-4.1.19-24.31.amzn1.i686
kernel-tools-4.1.19-24.31.amzn1.i686
kernel-4.1.19-24.31.amzn1.i686
kernel-debuginfo-4.1.19-24.31.amzn1.i686
perf-4.1.19-24.31.amzn1.i686
noarch:
kernel-doc-4.1.19-24.31.amzn1.noarch
src:
kernel-4.1.19-24.31.amzn1.src
x86_64:
kernel-tools-debuginfo-4.1.19-24.31.amzn1.x86_64
kernel-tools-devel-4.1.19-24.31.amzn1.x86_64
kernel-devel-4.1.19-24.31.amzn1.x86_64
kernel-headers-4.1.19-24.31.amzn1.x86_64
kernel-debuginfo-common-x86_64-4.1.19-24.31.amzn1.x86_64
kernel-tools-4.1.19-24.31.amzn1.x86_64
kernel-4.1.19-24.31.amzn1.x86_64
perf-4.1.19-24.31.amzn1.x86_64
perf-debuginfo-4.1.19-24.31.amzn1.x86_64
kernel-debuginfo-4.1.19-24.31.amzn1.x86_64