Vulnerability Name:

CVE-2018-20781 (CCN-157458)

Assigned:2017-04-27
Published:2017-04-27
Updated:2021-03-16
Summary: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.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-522
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2018-20781

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/gnome-keyring/+bug/1772919

Source: CCN
Type: GNOME Bugzilla – Bug 781486
Password is kept in process memory after pam_open_session

Source: MISC
Type: Issue Tracking, Patch, Vendor Advisory
https://bugzilla.gnome.org/show_bug.cgi?id=781486

Source: XF
Type: UNKNOWN
gnome-keyring-cve201820781-info-disc(157458)

Source: MISC
Type: Third Party Advisory
https://github.com/huntergregal/mimipenguin

Source: MISC
Type: Third Party Advisory
https://github.com/huntergregal/mimipenguin/tree/d95f1e08ce79783794f38433bbf7de5abd9792da

Source: MISC
Type: Vendor Advisory
https://gitlab.gnome.org/GNOME/gnome-keyring/issues/3

Source: CCN
Type: GNOME Web site
GNOME Keyring 3.27.2

Source: MISC
Type: Release Notes, Vendor Advisory
https://gitlab.gnome.org/GNOME/gnome-keyring/tags/3.27.2

Source: UBUNTU
Type: Third Party Advisory
USN-3894-1

Source: MISC
Type: Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:gnome:gnome-keyring:*:*:*:*:*:*:*:* (Version < 3.27.2)

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

    • Configuration 3:
  • cpe:/a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:201820781000
    V
    		CVE-2018-20781 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-02-12
    oval:com.ubuntu.cosmic:def:2018207810000000
    V
    		CVE-2018-20781 on Ubuntu 18.10 (cosmic) - medium.
    2019-02-12
    oval:com.ubuntu.cosmic:def:201820781000
    V
    		CVE-2018-20781 on Ubuntu 18.10 (cosmic) - medium.
    2019-02-12
    oval:com.ubuntu.bionic:def:2018207810000000
    V
    		CVE-2018-20781 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-02-12
    oval:com.ubuntu.trusty:def:201820781000
    V
    		CVE-2018-20781 on Ubuntu 14.04 LTS (trusty) - medium.
    2019-02-12
    oval:com.ubuntu.xenial:def:2018207810000000
    V
    		CVE-2018-20781 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-02-12
    oval:com.ubuntu.xenial:def:201820781000
    V
    		CVE-2018-20781 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-02-12
    BACK
    gnome gnome-keyring *
    canonical ubuntu linux 14.04
    canonical ubuntu linux 16.04
    oracle zfs storage appliance kit 8.8