National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-7796 Detail

Description

The manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled.

Source:  MITRE
Description Last Modified:  10/13/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0003.html
http://www.openwall.com/lists/oss-security/2016/09/30/1 Third Party Advisory
http://www.securityfocus.com/bid/93250 Third Party Advisory
http://www.securitytracker.com/id/1037320
https://bugzilla.redhat.com/show_bug.cgi?id=1381911 Issue Tracking Third Party Advisory VDB Entry
https://github.com/systemd/systemd/issues/4234#issuecomment-250441246 Exploit Patch Vendor Advisory
https://rhn.redhat.com/errata/RHBA-2015-2092.html Third Party Advisory
https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet Exploit Technical Description Third Party Advisory

Technical Details

Vulnerability Type (View All)

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-7796
NVD Published Date:
10/13/2016
NVD Last Modified:
07/27/2017