NVD - CVE-2016-7795

CVE-2016-7795 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

The manager_invoke_notify_message function in systemd 231 and earlier allows local users to cause a denial of service (assertion failure and PID 1 hang) via a zero-length message received over a notify socket.

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://rhn.redhat.com/errata/RHSA-2016-2610.html
http://rhn.redhat.com/errata/RHSA-2016-2694.html
http://www.openwall.com/lists/oss-security/2016/09/28/9	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/30/1	Third Party Advisory
http://www.securityfocus.com/bid/93223	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037320
http://www.ubuntu.com/usn/USN-3094-1	Third Party Advisory
https://github.com/systemd/systemd/issues/4234	Exploit Patch 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)

Input Validation (CWE-20)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Configuration 2
OR
cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* versions up to (including) 231

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

5 change records found - show changes

Modified Analysis - 10/13/2016 5:44:55 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Configuration 1 OR cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::* Configuration 2 OR cpe:2.3:a:systemd_project:systemd:231::::::: (and previous)
Added	CVSS V2		(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Added	CVSS V3		AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added	CWE		CWE-20
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2016/09/28/9 No Types Assigned	http://www.openwall.com/lists/oss-security/2016/09/28/9 Third Party Advisory
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2016/09/30/1 No Types Assigned	http://www.openwall.com/lists/oss-security/2016/09/30/1 Third Party Advisory
Changed	Reference Type	http://www.securityfocus.com/bid/93223 No Types Assigned	http://www.securityfocus.com/bid/93223 Third Party Advisory, VDB Entry
Changed	Reference Type	http://www.ubuntu.com/usn/USN-3094-1 No Types Assigned	http://www.ubuntu.com/usn/USN-3094-1 Third Party Advisory
Changed	Reference Type	https://github.com/systemd/systemd/issues/4234 No Types Assigned	https://github.com/systemd/systemd/issues/4234 Third Party Advisory, Exploit, Patch
Changed	Reference Type	https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet No Types Assigned	https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet Third Party Advisory, Technical Description, Exploit

Initial CVE Analysis - 10/13/2016 1:52:27 PM

Action	Type	Old Value	New Value
Changed	CPE Configuration	Configuration 1 OR	Configuration 1 OR cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::* Configuration 2 OR cpe:2.3:a:systemd_project:systemd:231::::::: (and previous)
Added	CVSS V2		(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Added	CVSS V3		AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added	CWE		CWE-20
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2016/09/28/9 No Types Assigned	http://www.openwall.com/lists/oss-security/2016/09/28/9 Third Party Advisory
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2016/09/30/1 No Types Assigned	http://www.openwall.com/lists/oss-security/2016/09/30/1 Third Party Advisory
Changed	Reference Type	http://www.securityfocus.com/bid/93223 No Types Assigned	http://www.securityfocus.com/bid/93223 Third Party Advisory, VDB Entry
Changed	Reference Type	http://www.ubuntu.com/usn/USN-3094-1 No Types Assigned	http://www.ubuntu.com/usn/USN-3094-1 Third Party Advisory
Changed	Reference Type	https://github.com/systemd/systemd/issues/4234 No Types Assigned	https://github.com/systemd/systemd/issues/4234 Exploit, Patch, Third Party Advisory
Changed	Reference Type	https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet No Types Assigned	https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet Exploit, Technical Description, Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2016-7795
NVD Published Date:
10/13/2016
NVD Last Modified:
07/27/2017

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