PT-2018-2702 · Canonical+2 · Lightdm+3

Published 2018-03-18 · Updated 2021-03-16 · CVE-2018-20781

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions GNOME Keyring versions prior to 3.27.2

Description The issue is related to errors in managing registration data in the GNOME Keyring service for storing user names and passwords. Exploitation of this issue may allow an attacker to gain unauthorized access to protected information. Specifically, in versions before 3.27.2, the user's password is kept in a session-child process spawned from the LightDM daemon, potentially exposing the credential in cleartext.

Recommendations For GNOME Keyring versions prior to 3.27.2, update to version 3.27.2 or later to resolve the issue. As a temporary workaround, consider restricting access to sensitive information stored in GNOME Keyring until the update can be applied.

Exploit

Fix

Insufficiently Protected Credentials

Weakness Enumeration

CWE-255

CWE-522

Related Identifiers

ALT-PU-2018-1449

BDU:2019-01411

CVE-2018-20781

MGASA-2019-0111

USN-3894-1

Affected Products

Alt Linux

Gnome Keyring

Lightdm

Ubuntu

References · 23

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/post/linux/gather/mimipenguin.rb · Exploit
• https://gitlab.gnome.org/GNOME/gnome-keyring/tags/3.27.2 · Vendor Advisory
• https://usn.ubuntu.com/3894-1 · Vendor Advisory
• https://bugzilla.gnome.org/show_bug.cgi?id=781486 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20781 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20230315SE81 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20781 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20781 · Security Note
• https://gitlab.gnome.org/GNOME/gnome-keyring/issues/3 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-20781 · Vendor Advisory
• https://bugs.launchpad.net/ubuntu/+source/gnome-keyring/+bug/1772919 · Patch
• https://osv.dev/vulnerability/CVE-2018-20781 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-01411 · Security Note
• https://osv.dev/vulnerability/MGASA-2019-0111 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20781 · Vendor Advisory