PT-2016-7396 · Systemd+2 · Systemd+2

Andrew Ayer · Published 2016-09-29 · Updated 2017-07-28 · CVE-2016-7795

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions systemd versions 231 and earlier

Description The issue allows local users to cause a denial of service, resulting in an assertion failure and PID 1 hang, by sending a zero-length message over a notify socket. This is due to a problem in the manager invoke notify message function.

Recommendations For versions 231 and earlier, as a temporary workaround, consider restricting access to the manager invoke notify message function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALT-PU-2017-1085

CVE-2016-7795

MGASA-2016-0380

RHSA-2016:2610

RHSA-2016:2694

RHSA-2016_2610

USN-3094-1

Affected Products

Alt Linux

Red Hat

Systemd

References · 25

• 🔥 https://github.com/systemd/systemd/issues/4234 · Exploit
• 🔥 https://agwa.name/blog/post/how_to_crash_systemd_in_one_tweet · Exploit
• http://ubuntu.com/usn/USN-3094-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3094-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-7795 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-7795 · Security Note
• http://rhn.redhat.com/errata/RHSA-2016-2694.html · Vendor Advisory
• https://osv.dev/vulnerability/USN-3094-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7795 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2016-0380 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-7795 · Security Note
• https://linux.oracle.com/errata/ELSA-2016-2610.html · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-7795 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-7795 · Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2016-2610.html · Vendor Advisory