ALAS2-2020-1388


Amazon Linux 2 Security Advisory: ALAS-2020-1388
Advisory Release Date: 2020-02-03 21:13 Pacific
Advisory Updated Date: 2020-02-08 00:05 Pacific
Severity: Medium

Issue Overview:

A heap use-after-free vulnerability was found in systemd, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages. (CVE-2020-1712)


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.amzn2.0.12.aarch64
    systemd-libs-219-57.amzn2.0.12.aarch64
    systemd-devel-219-57.amzn2.0.12.aarch64
    systemd-sysv-219-57.amzn2.0.12.aarch64
    systemd-python-219-57.amzn2.0.12.aarch64
    libgudev1-219-57.amzn2.0.12.aarch64
    libgudev1-devel-219-57.amzn2.0.12.aarch64
    systemd-journal-gateway-219-57.amzn2.0.12.aarch64
    systemd-networkd-219-57.amzn2.0.12.aarch64
    systemd-resolved-219-57.amzn2.0.12.aarch64
    systemd-debuginfo-219-57.amzn2.0.12.aarch64

i686:
    systemd-219-57.amzn2.0.12.i686
    systemd-libs-219-57.amzn2.0.12.i686
    systemd-devel-219-57.amzn2.0.12.i686
    systemd-sysv-219-57.amzn2.0.12.i686
    systemd-python-219-57.amzn2.0.12.i686
    libgudev1-219-57.amzn2.0.12.i686
    libgudev1-devel-219-57.amzn2.0.12.i686
    systemd-journal-gateway-219-57.amzn2.0.12.i686
    systemd-networkd-219-57.amzn2.0.12.i686
    systemd-resolved-219-57.amzn2.0.12.i686
    systemd-debuginfo-219-57.amzn2.0.12.i686

src:
    systemd-219-57.amzn2.0.12.src

x86_64:
    systemd-219-57.amzn2.0.12.x86_64
    systemd-libs-219-57.amzn2.0.12.x86_64
    systemd-devel-219-57.amzn2.0.12.x86_64
    systemd-sysv-219-57.amzn2.0.12.x86_64
    systemd-python-219-57.amzn2.0.12.x86_64
    libgudev1-219-57.amzn2.0.12.x86_64
    libgudev1-devel-219-57.amzn2.0.12.x86_64
    systemd-journal-gateway-219-57.amzn2.0.12.x86_64
    systemd-networkd-219-57.amzn2.0.12.x86_64
    systemd-resolved-219-57.amzn2.0.12.x86_64
    systemd-debuginfo-219-57.amzn2.0.12.x86_64