systemd up to 231 Notify Socket manager_invoke_notify_message input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in systemd up to 231 and classified as problematic. This vulnerability affects the function manager_invoke_notify_message of the component Notify Socket. The manipulation leads to input validation. This vulnerability is documented as CVE-2016-7795. The attack needs to be performed locally. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in systemd up to 231. This issue affects the function manager_invoke_notify_message of the component Notify Socket. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

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.

The weakness was released 10/13/2016 by Andrew (Website). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2016-7795 since 09/09/2016. The exploitation is known to be easy. Attacking locally is a requirement. A simple authentication is necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 95862 (Scientific Linux Security Update : systemd on SL7.x x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276181 (Fedora Security Update for systemd (FEDORA-2016-c942ed0424)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95862) and SecurityFocus (BID 93223†). Entry connected to this vulnerability is available at VDB-92712. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95862
Nessus Name: Scientific Linux Security Update : systemd on SL7.x x86_64
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 100535
OpenVAS Name: RedHat Update for systemd RHSA-2016:2610-01
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

09/09/2016 🔍
09/29/2016 +20 days 🔍
10/13/2016 +14 days 🔍
10/13/2016 +0 days 🔍
10/14/2016 +1 days 🔍
11/03/2016 +20 days 🔍
12/15/2016 +42 days 🔍
09/26/2022 +2111 days 🔍

Sourcesinfo

Product: github.com

Advisory: USN-3094-1
Researcher: Andrew
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-7795 (🔍)
GCVE (CVE): GCVE-0-2016-7795
GCVE (VulDB): GCVE-100-92711
SecurityFocus: 93223 - systemd 'manager_invoke_notify_message()' Function Local Denial of Service Vulnerability
SecurityTracker: 1037320

See also: 🔍

Entryinfo

Created: 10/14/2016 11:25
Updated: 09/26/2022 09:12
Changes: 10/14/2016 11:25 (65), 05/09/2019 09:28 (14), 09/26/2022 09:10 (5), 09/26/2022 09:12 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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