ALAS2-2019-1164


Amazon Linux 2 Security Advisory: ALAS-2019-1164
Advisory Release Date: 2019-02-18 18:04 Pacific
Severity: Important
References: CVE-2019-6454 

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


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