Vulnerability identifier: #VU17715

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2018-20781

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
GNOME Keyring
Client/Desktop applications / Encryption software

Vendor: Gnome Development Team

Description

The vulnerability allows a remote root privileged attacker to gain access to potentially sensitive information.

The vulnerability exists due to the LightDM daemon in the affected software stores user passwords in cleartext. A remote attacker can performa memory dump and retrieve login credentials, which can be used to conduct further attacks.

Mitigation
Update to version 3.27.2.

Vulnerable software versions

GNOME Keyring: 3.0.0 - 3.27.0

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External links
http://bugs.launchpad.net/ubuntu/+source/gnome-keyring/+bug/1772919
http://bugzilla.gnome.org/show_bug.cgi?id=781486
http://gitlab.gnome.org/GNOME/gnome-keyring/issues/3
http://gitlab.gnome.org/GNOME/gnome-keyring/tags/3.27.2

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.