CVE-2018-20781 Information disclosure in n/a

What is CVE-2018-20781?

CVE-2018-20781 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 12 Feb 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In pam/gkr-pam-module.c in GNOME Keyring before 3.27.2, the user's password is kept in a session-child process spawned from the LightDM daemon. This can expose the credential in cleartext.

Weakness: CWE-522

Which versions are affected by CVE-2018-20781?

It affects 3 products.

Products include Canonical Ubuntu Linux, Gnome Gnome Keyring, Oracle Zfs Storage Appliance Kit.

How do I fix CVE-2018-20781?

Upgrade to a fixed version.

Is CVE-2018-20781 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-20781 exists.

Public exploit code: 1 Metasploit module.

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-2018-20781, GHSA-rqh7-8g2w-wcqc, MGASA-2019-0111, UBUNTU-CVE-2018-20781, USN-3894-1.