CVE-2018-16866 Information disclosure in systemd

What is CVE-2018-16866?

CVE-2018-16866 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 11 Jan 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-200, CWE-125

Which versions are affected by CVE-2018-16866?

It affects 21 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Netapp Active Iq Performance Analytics Services, Netapp Element Software, Redhat Enterprise Linux, Redhat Enterprise Linux Compute Node Eus and 15 more.

How do I fix CVE-2018-16866?

Apply the vendor's patch.

Is CVE-2018-16866 being exploited?

There is no known exploitation of CVE-2018-16866 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-16866, GHSA-jr8q-jw7m-4m3m, UBUNTU-CVE-2018-16866.