Debian LTS Advisory ([SECURITY] [DLA 1580-1] systemd security update)

Published: 2018-11-19 23:00:00
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

Affected Versions:
systemd on Debian Linux

Recommendations:
For Debian 8 'Jessie', these problems have been fixed in version 215-17+deb8u8. We recommend that you upgrade your systemd Linux Distribution Packages.

Summary:
systemd was found to suffer from multiple security vulnerabilities ranging from denial of service attacks to possible root privilege escalation. CVE-2018-1049 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.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-1049
https://nvd.nist.gov/vuln/detail/CVE-2018-15686
https://nvd.nist.gov/vuln/detail/CVE-2018-15688

References:

https://lists.debian.org/debian-lts-announce/2018/11/msg00017.html

Severity
High
CVSS Score
10.0
Published
2018-11-19
Modified
2019-03-18
Category
Debian Local Security Checks

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