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CVE-2019-3843

Date: April 26, 2019

It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.

Language: C

Severity Score

Related Resources (15)

https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
https://nvd.nist.gov/vuln/detail/CVE-2019-3843
http://www.securityfocus.com/bid/108116
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5JXQAKSTMABZ46EVCRMW62DHWYHTTFES/
https://security-tracker.debian.org/tracker/CVE-2019-3843
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5JXQAKSTMABZ46EVCRMW62DHWYHTTFES/
https://security.netapp.com/advisory/ntap-20190619-0002/
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://access.redhat.com/security/cve/CVE-2019-3843
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3843
https://usn.ubuntu.com/4269-1/
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-3843
https://www.mend.io/vulnerability-database/CVE-2019-3843

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

Insufficient Information

NVD-CWE-noinfo

Improper Privilege Management

CWE-269

Incorrect Privilege Assignment

CWE-266

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): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

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

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