Vulnerability Name:

CVE-2020-16125 (CCN-191381)

Assigned:2020-10-17
Published:2020-10-17
Updated:2020-11-24
Summary:gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can't contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.
CVSS v3 Severity:6.8 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
5.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Physical
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN 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 (CCN 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
6.4 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
5.6 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Physical
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:4.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-754
CWE-636
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2020-16125

Source: MISC
Type: Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314

Source: XF
Type: UNKNOWN
gnome-cve202016125-priv-esc(191381)

Source: CCN
Type: GNOME GIT Repository
gdm3 privilege escalation due to unresponsive accounts-daemon (GHSL-2020-202)

Source: MISC
Type: Exploit, Vendor Advisory
https://gitlab.gnome.org/GNOME/gdm/-/issues/642

Source: MISC
Type: Exploit, Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon

Vulnerable Configuration:Configuration 1:
  • cpe:/a:gnome:gnome_display_manager:*:*:*:*:*:*:*:* (Version < 3.36.2)
  • OR cpe:/a:gnome:gnome_display_manager:*:*:*:*:*:*:*:* (Version >= 3.38.0 and < 3.38.2)

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:202016125
    V
    		CVE-2020-16125
    2023-06-22
    oval:org.opensuse.security:def:7892
    P
    		gdm-41.3-150400.4.6.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:5334
    P
    		Security update for postgresql13 (Important)
    2022-08-26
    oval:org.opensuse.security:def:3391
    P
    		unzip-6.00-33.8.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3274
    P
    		libusbmuxd4-1.0.10-2.3 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3412
    P
    		yast2-core-3.3.1-1.7 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3414
    P
    		yubikey-manager-0.6.0-1.27 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3361
    P
    		sane-backends-1.0.24-3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3415
    P
    		zoo-2.10-1020.56 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3400
    P
    		xdg-utils-20140630-6.3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3418
    P
    		DirectFB-1.7.1-6.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94751
    P
    		log4j12-1.2.17-4.9.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94904
    P
    		gdm-41.3-150400.2.7 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95120
    P
    		libmariadb-devel-3.1.13-3.30.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:2911
    P
    		dstat-0.7.3-2.16 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:2921
    P
    		flac-devel-1.3.2-3.9.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:1660
    P
    		Security update for libslirp (Important)
    2022-04-29
    oval:org.opensuse.security:def:101833
    P
    		Security update for go1.16 (Important)
    2022-04-12
    oval:org.opensuse.security:def:112282
    P
    		gdm-41.0-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:70578
    P
    		Security update for java-1_8_0-ibm (Important) (in QA)
    2022-01-04
    oval:org.opensuse.security:def:64819
    P
    		Security update for xen (Moderate)
    2021-12-07
    oval:org.opensuse.security:def:67330
    P
    		Security update for netcdf (Important)
    2021-11-30
    oval:org.opensuse.security:def:73900
    P
    		Security update for the Linux Kernel (Important)
    2021-10-12
    oval:org.opensuse.security:def:70484
    P
    		Security update for webkit2gtk3 (Important)
    2021-10-04
    oval:org.opensuse.security:def:105807
    P
    		gdm-41.0-1.1 on GA media (Moderate)
    2021-10-01
    oval:org.opensuse.security:def:96756
    P
    		python3-numpy-1.14.0-4.5.1 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:96630
    P
    		libcroco-0.6.12-2.38 on GA media (Moderate)
    2021-09-21
    oval:org.opensuse.security:def:73698
    P
    		Security update for libcroco (Moderate)
    2021-09-16
    oval:org.opensuse.security:def:64575
    P
    		Security update for ghostscript (Critical)
    2021-09-15
    oval:org.opensuse.security:def:67235
    P
    		Security update for systemd (Moderate)
    2021-08-23
    oval:org.opensuse.security:def:2242
    P
    		grub2-x86_64-xen-2.04-20.4 on GA media (Moderate)
    2021-08-10
    oval:org.opensuse.security:def:2266
    P
    		libwsman-devel-2.6.7-3.9.1 on GA media (Moderate)
    2021-08-10
    oval:org.opensuse.security:def:2273
    P
    		ovmf-202008-8.1 on GA media (Moderate)
    2021-08-10
    oval:org.opensuse.security:def:2261
    P
    		libspice-server-devel-0.14.3-1.48 on GA media (Moderate)
    2021-08-10
    oval:org.opensuse.security:def:2271
    P
    		openslp-server-2.0.0-6.15.1 on GA media (Moderate)
    2021-08-10
    oval:org.opensuse.security:def:72468
    P
    		gdm-3.34.1-8.15.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:62749
    P
    		gdm-3.34.1-8.15.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:101155
    P
    		gdm-3.34.1-8.15.1 on GA media (Moderate)
    2021-08-09
    oval:org.opensuse.security:def:101464
    P
    		Security update for libgcrypt (Important)
    2021-06-24
    oval:org.opensuse.security:def:64712
    P
    		Security update for libjpeg-turbo (Moderate)
    2021-06-11
    oval:org.opensuse.security:def:64711
    P
    		Security update for salt (Important)
    2021-06-10
    oval:org.opensuse.security:def:67128
    P
    		Security update for slurm_18_08 (Important)
    2021-06-04
    oval:org.opensuse.security:def:73819
    P
    		Security update for python-httplib2 (Moderate)
    2021-05-31
    oval:com.redhat.rhsa:def:20211586
    P
    		RHSA-2021:1586: GNOME security, bug fix, and enhancement update (Moderate)
    2021-05-18
    oval:org.opensuse.security:def:70376
    P
    		Security update for umoci (Important)
    2021-04-09
    oval:org.opensuse.security:def:67033
    P
    		Security update for python3 (Moderate)
    2021-02-19
    oval:org.opensuse.security:def:49460
    P
    		Security update for php74 (Important)
    2021-02-19
    oval:org.opensuse.security:def:51163
    P
    		Security update for screen (Important)
    2021-02-17
    oval:org.opensuse.security:def:4069
    P
    		Security update for MozillaFirefox (Important)
    2021-01-29
    oval:org.opensuse.security:def:110373
    P
    		Security update for gdm (Important)
    2020-12-15
    oval:org.opensuse.security:def:65136
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:104785
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:74204
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:66423
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:4047
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:75491
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:90591
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:97556
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:104246
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:91130
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:98095
    P
    		Security update for gdm (Important)
    2020-12-14
    oval:org.opensuse.security:def:51089
    P
    		Security update for the Linux Kernel (Live Patch 38 for SLE 12 SP2) (Important)
    2020-12-07
    oval:org.opensuse.security:def:86466
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:32821
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:82064
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:25970
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:57382
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:51081
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:89094
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:84530
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:31082
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:23093
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:59697
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:125498
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:55122
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:87285
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:33616
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:82506
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:28857
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:57825
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:51467
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:89352
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:85546
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:31559
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:23479
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:60146
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:126670
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:55770
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:88078
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:33874
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:83154
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:29299
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:58644
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:4957
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:51853
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:86023
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:32002
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:81019
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:4056
    P
    		libsrtp-devel-1.5.2-3.2.1 on GA media (Moderate)
    2020-12-03
    oval:org.opensuse.security:def:23865
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:127067
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:56905
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:88387
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:34323
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:84075
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:29947
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:21348
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:59439
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:54680
    P
    		Security update for gdm (Important)
    2020-12-03
    oval:org.opensuse.security:def:64921
    P
    		Security update for gcc9 (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:50916
    P
    		Security update for zstd (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:51294
    P
    		Security update for MozillaFirefox (Important)
    2020-12-01
    oval:org.opensuse.security:def:50018
    P
    		libvirt on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:64978
    P
    		Security update for mozilla-nspr, mozilla-nss (Important)
    2020-12-01
    oval:org.opensuse.security:def:51356
    P
    		Security update for gdm (Important)
    2020-12-01
    oval:org.opensuse.security:def:50579
    P
    		Security update for python (Important)
    2020-12-01
    oval:org.opensuse.security:def:65090
    P
    		Security update for python-setuptools (Important)
    2020-12-01
    oval:org.opensuse.security:def:74021
    P
    		Security update for gdm (Important)
    2020-12-01
    oval:org.opensuse.security:def:49693
    P
    		libsmi-devel on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:52439
    P
    		Security update for slurm_18_08 (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:49849
    P
    		ncurses-devel-32bit on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:52501
    P
    		Security update for gdm (Important)
    2020-12-01
    oval:org.opensuse.security:def:49914
    P
    		mercurial on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:70686
    P
    		Security update for gdm (Important)
    2020-12-01
    oval:org.opensuse.security:def:50823
    P
    		Security update for conmon, fuse-overlayfs, libcontainers-common, podman (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:75032
    P
    		Security update for postgresql, postgresql96, postgresql10, postgresql12 (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:49945
    P
    		dpdk on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:50990
    P
    		Security update for the Linux Kernel (Critical)
    2020-12-01
    oval:org.opensuse.security:def:49782
    P
    		dpkg on GA media (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:75165
    P
    		Security update for gdm (Important)
    2020-12-01
    oval:org.opensuse.security:def:51057
    P
    		Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:110860
    P
    		Security update for gdm (Important)
    2020-11-18
    oval:org.opensuse.security:def:108130
    P
    		Security update for gdm (Important)
    2020-11-16
    oval:org.opensuse.security:def:108499
    P
    		Security update for gdm (Important)
    2020-11-16
    oval:org.opensuse.security:def:75729
    P
    		Security update for gdm (Important)
    2020-11-16
    oval:org.opensuse.security:def:117644
    P
    		Security update for gdm (Important)
    2020-11-16
    BACK
    gnome gnome display manager *
    gnome gnome display manager *