Amazon Linux 2 Security Advisory: ALAS-2019-1164
Advisory Release Date: 2019-02-16 00:44 Pacific
Advisory Updated Date: 2019-02-18 18:04 Pacific
Severity:
Important
Issue Overview:
It was found that bus_process_object() in bus-objects.c allocates a buffer on the stack large enough to temporarily store the object path specified in the incoming message. A malicious unprivileged local user to send a message which results in the stack pointer moving outside of the bounds of the currently mapped stack region, jumping over the stack guard pages. A specifically crafted DBUS nessage could crash PID 1 and result in a subsequent kernel panic.(CVE-2019-6454)
Affected Packages:
systemd
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update systemd to update your system.
New Packages:
aarch64:
systemd-219-57.amzn2.0.9.aarch64
systemd-libs-219-57.amzn2.0.9.aarch64
systemd-devel-219-57.amzn2.0.9.aarch64
systemd-sysv-219-57.amzn2.0.9.aarch64
systemd-python-219-57.amzn2.0.9.aarch64
libgudev1-219-57.amzn2.0.9.aarch64
libgudev1-devel-219-57.amzn2.0.9.aarch64
systemd-journal-gateway-219-57.amzn2.0.9.aarch64
systemd-networkd-219-57.amzn2.0.9.aarch64
systemd-resolved-219-57.amzn2.0.9.aarch64
systemd-debuginfo-219-57.amzn2.0.9.aarch64
i686:
systemd-219-57.amzn2.0.9.i686
systemd-libs-219-57.amzn2.0.9.i686
systemd-devel-219-57.amzn2.0.9.i686
systemd-sysv-219-57.amzn2.0.9.i686
systemd-python-219-57.amzn2.0.9.i686
libgudev1-219-57.amzn2.0.9.i686
libgudev1-devel-219-57.amzn2.0.9.i686
systemd-journal-gateway-219-57.amzn2.0.9.i686
systemd-networkd-219-57.amzn2.0.9.i686
systemd-resolved-219-57.amzn2.0.9.i686
systemd-debuginfo-219-57.amzn2.0.9.i686
src:
systemd-219-57.amzn2.0.9.src
x86_64:
systemd-219-57.amzn2.0.9.x86_64
systemd-libs-219-57.amzn2.0.9.x86_64
systemd-devel-219-57.amzn2.0.9.x86_64
systemd-sysv-219-57.amzn2.0.9.x86_64
systemd-python-219-57.amzn2.0.9.x86_64
libgudev1-219-57.amzn2.0.9.x86_64
libgudev1-devel-219-57.amzn2.0.9.x86_64
systemd-journal-gateway-219-57.amzn2.0.9.x86_64
systemd-networkd-219-57.amzn2.0.9.x86_64
systemd-resolved-219-57.amzn2.0.9.x86_64
systemd-debuginfo-219-57.amzn2.0.9.x86_64