CVE-2019-3843

high

Description

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3843

https://lists.fedoraproject.org/archives/list/[email protected]/message/5JXQAKSTMABZ46EVCRMW62DHWYHTTFES/

http://www.securityfocus.com/bid/108116

https://security.netapp.com/advisory/ntap-20190619-0002/

https://usn.ubuntu.com/4269-1/

https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E

Details

Source: MITRE

Published: 2019-04-26

Updated: 2021-06-29

Type: CWE-266

Risk Information

CVSS v2

Base Score: 4.6

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

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH