CVE-2018-16865

An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journald when many entries are sent to the journal socket. A local attacker, or a remote one if systemd-journal-remote is used, may use this flaw to crash systemd-journald or execute code with journald privileges. Versions through v240 are vulnerable.

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.0

7.5 HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

4.6 MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS

3.02% chance of exploitation in the next 30 days, 86th percentile

Published

2019-01-11

Updated

2025-06-09

Proof-of-concept exploits (5)

• http://packetstormsecurity.com/files/152841/System-Down-A-systemd-journald-Exploit.html
• https://www.qualys.com/2019/01/09/system-down/system-down.txt
• http://www.openwall.com/lists/oss-security/2019/05/10/4
• https://seclists.org/bugtraq/2019/May/25
• http://seclists.org/fulldisclosure/2019/May/21

References

• CVE Record
• NVD entry

Related

• CVE-2018-16864
• CVE-2018-16866
• CVE-2018-16858
• CVE-2018-16875
• CVE-2018-16836
• CVE-2018-16890