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Alerts This Week
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Debian 8 DLA-1580-1 Critical: Systemd DoS And Escalation Issues

debian lts
Calendar Grey November 19, 2018
Dist Debian Esm H88
Critical systemd patch for Ubuntu resolves various weaknesses impacting functionality and safety.
systemd was found to suffer from multiple security vulnerabilities ranging from denial of service attacks to possible root privilege escalation
Topics%20covered

Topics Covered

security advisory denial of service critical debian root escalation systemd

Summary

A race condition exists between .mount and .automount units such
that automount requests from kernel may not be serviced by systemd
resulting in kernel holding the mountpoint and any processes that
try to use said mount will hang. A race condition like this may
lead to denial of service, until mount points are unmounted.

CVE-2018-15686

A vulnerability in unit_deserialize of systemd allows an attacker
to supply arbitrary state across systemd re-execution via
NotifyAccess. This can be used to improperly influence systemd
execution and possibly lead to root privilege escalation.

CVE-2018-15688

A buffer overflow vulnerability in the dhcp6 client of systemd
allows a malicious dhcp6 server to overwrite heap memory in
systemd-networkd, which is not enabled by default in Debian.

For Debian 8 "Jessie", these problems have been fixed in version
215-17+deb8u8.

We recommend that you upgrade your systemd packages.

Read the Full Advisory


Severity
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<pre><font face="Courier">Package: systemd
Version: 215-17+deb8u8
CVE ID: CVE-2018-1049 CVE-2018-15686 CVE-2018-15688
Debian Bug: 912005 912008

Topics%20covered

Topics Covered

security advisory denial of service critical debian root escalation systemd

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