CVE-2016-7795

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3.0 : MEDIUM

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

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://www.ubuntu.com/usn/USN-3094-1	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/30/1	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/28/9	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
http://www.securityfocus.com/bid/93223	Third Party Advisory VDB Entry
http://rhn.redhat.com/errata/RHSA-2016-2694.html
http://rhn.redhat.com/errata/RHSA-2016-2610.html
http://www.securitytracker.com/id/1037320

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

Configuration 2 (hide)

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

Information

Published : 2016-10-13 07:59

Updated : 2017-07-27 18:29

NVD link : CVE-2016-7795

Mitre link : CVE-2016-7795

JSON object : View

CWE

CWE-20

Improper Input Validation

Advertisement

Products Affected

canonical

ubuntu_linux

systemd_project

systemd

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://www.ubuntu.com/usn/USN-3094-1", "name": "USN-3094-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "http://www.openwall.com/lists/oss-security/2016/09/30/1", "name": "[oss-security] 20160930 Re: CVE Request: systemd v209+: local denial-of-service attack", "tags": ["Third Party Advisory"], "refsource": "MLIST"}, {"url": "http://www.openwall.com/lists/oss-security/2016/09/28/9", "name": "[oss-security] 20160928 CVE Request: systemd v209+: local denial-of-service attack", "tags": ["Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://github.com/systemd/systemd/issues/4234", "name": "https://github.com/systemd/systemd/issues/4234", "tags": ["Exploit", "Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet", "name": "https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweet", "tags": ["Exploit", "Technical Description", "Third Party Advisory"], "refsource": "MISC"}, {"url": "http://www.securityfocus.com/bid/93223", "name": "93223", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}, {"url": "http://rhn.redhat.com/errata/RHSA-2016-2694.html", "name": "RHSA-2016:2694", "tags": [], "refsource": "REDHAT"}, {"url": "http://rhn.redhat.com/errata/RHSA-2016-2610.html", "name": "RHSA-2016:2610", "tags": [], "refsource": "REDHAT"}, {"url": "http://www.securitytracker.com/id/1037320", "name": "1037320", "tags": [], "refsource": "SECTRACK"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2016-7795", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "impactScore": 6.9, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}}, "publishedDate": "2016-10-13T14:59Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "231"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2017-07-28T01:29Z"}