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CVE-2016-7796

Date: October 13, 2016

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.

Severity Score

Related Resources (15)

https://security-tracker.debian.org/tracker/CVE-2016-7796
https://nvd.nist.gov/vuln/detail/CVE-2016-7796
https://access.redhat.com/security/cve/CVE-2016-7796
https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet
https://bugzilla.redhat.com/show_bug.cgi?id=1381911
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.html
http://www.securityfocus.com/bid/93250
http://www.openwall.com/lists/oss-security/2016/09/30/1
https://rhn.redhat.com/errata/RHBA-2015-2092.html
https://github.com/systemd/systemd/issues/4234#issuecomment-250441246
http://rhn.redhat.com/errata/RHSA-2017-0003.html
http://www.securitytracker.com/id/1037320
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-7796
http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.html
https://www.mend.io/vulnerability-database/CVE-2016-7796

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:
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

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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