CVE-2018-16866

An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker can use this flaw to disclose process memory data. Versions from v221 to v239 are vulnerable.

CVSS v3.1

3.3 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.0

4.3 MEDIUMCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v2.0

2.1 LOWAV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS

1.05% chance of exploitation in the next 30 days, 62th 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-2018-16865
• CVE-2018-16875
• CVE-2018-16864
• CVE-2018-16890
• CVE-2018-16858
• CVE-2018-16946