Vulnerability Name:

CVE-2020-25719 (CCN-215461)

Assigned:2020-09-16
Published:2021-11-08
Updated:2022-10-21
Summary:A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.
CVSS v3 Severity:7.2 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
6.3 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.2 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
6.3 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.2 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
6.3 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:9.0 High (CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-362
CWE-287
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2020-25719

Source: CCN
Type: Red Hat Bugzilla – Bug 2019732
(CVE-2020-25719) - CVE-2020-25719 samba: Samba AD DC did not always rely on the SID and PAC in Kerberos tickets

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2019732

Source: XF
Type: UNKNOWN
samba-cve202025719-sec-bypass(215461)

Source: CCN
Type: Samba Web site
Samba AD DC did not always rely on the SID and PAC in Kerberos tickets

Source: MISC
Type: Mitigation, Vendor Advisory
https://www.samba.org/samba/security/CVE-2020-25719.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.15.0 and < 4.15.2)
  • OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.14.0 and < 4.14.10)
  • OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.0.0 and < 4.13.14)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:21.04:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*

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

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

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*

    • Configuration RedHat 6:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*

    • Configuration RedHat 7:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:samba:samba:4.13.0:-:*:*:*:*:*:*
  • OR cpe:/a:samba:samba:4.14.0:-:*:*:*:*:*:*
  • OR cpe:/a:samba:samba:4.15.0:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7662
    P
    		libsamba-policy-devel-4.17.7+git.330.4057cd7a27a-150500.1.2 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7682
    P
    		libtiff-devel-4.0.9-150000.45.25.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:7661
    P
    		libsamba-errors-devel-4.13.13+git.539.fdbc44a8598-3.20.2 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:807
    P
    		Security update for python3 (Important)
    2022-10-06
    oval:org.opensuse.security:def:3708
    P
    		Security update for git (Important)
    2022-07-26
    oval:org.opensuse.security:def:3071
    P
    		ft2demos-2.6.3-7.15.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3072
    P
    		fuse-2.9.3-6.3.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94701
    P
    		libsamba-errors-devel-4.13.13+git.539.fdbc44a8598-3.20.2 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:94702
    P
    		libsamba-policy-devel-4.15.5+git.328.f1f29505d84-150400.1.44 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:112126
    P
    		ctdb-4.15.2+git.193.a4d6307f1fd-1.1 on GA media (Moderate)
    2022-01-17
    oval:com.redhat.rhsa:def:20215195
    P
    		RHSA-2021:5195: ipa security and bug fix update (Moderate)
    2021-12-16
    oval:com.redhat.rhsa:def:20215142
    P
    		RHSA-2021:5142: idm:DL1 security update (Moderate)
    2021-12-15
    oval:org.opensuse.security:def:102137
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:99159
    P
    		 (Important)
    2021-11-10
    oval:org.opensuse.security:def:8396
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:1740
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:100349
    P
    		 (Important)
    2021-11-10
    oval:org.opensuse.security:def:64797
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:102298
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:99431
    P
    		 (Important)
    2021-11-10
    oval:org.opensuse.security:def:73919
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:100678
    P
    		 (Important)
    2021-11-10
    oval:org.opensuse.security:def:67313
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:6224
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:99694
    P
    		 (Important)
    2021-11-10
    oval:org.opensuse.security:def:76381
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:111781
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:101538
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:68771
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:1576
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:100013
    P
    		 (Important)
    2021-11-10
    oval:org.opensuse.security:def:76551
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    oval:org.opensuse.security:def:42238
    P
    		Security update for samba and ldb (Important)
    2021-11-10
    BACK
    samba samba *
    samba samba *
    samba samba *
    debian debian linux 9.0
    debian debian linux 10.0
    fedoraproject fedora 33
    fedoraproject fedora 34
    fedoraproject fedora 35
    canonical ubuntu linux 20.04
    canonical ubuntu linux 21.04
    canonical ubuntu linux 21.10
    redhat enterprise linux desktop 7.0
    redhat enterprise linux workstation 7.0
    redhat enterprise linux for scientific computing 7.0
    redhat enterprise linux 7.0
    redhat enterprise linux for power little endian 7.0
    redhat enterprise linux for power big endian 7.0
    redhat enterprise linux for ibm z systems 7.0
    redhat enterprise linux 8.0
    redhat enterprise linux eus 8.2
    redhat enterprise linux eus 8.4
    redhat enterprise linux for ibm z systems 8.0
    redhat enterprise linux for ibm z systems eus 8.2
    redhat enterprise linux for ibm z systems eus 8.4
    redhat enterprise linux for power little endian 8.0
    redhat enterprise linux for power little endian eus 8.2
    redhat enterprise linux for power little endian eus 8.4
    redhat enterprise linux server aus 8.2
    redhat enterprise linux server aus 8.4
    redhat enterprise linux server tus 8.2
    redhat enterprise linux server tus 8.4
    redhat enterprise linux server update services for sap solutions 8.2
    redhat enterprise linux server update services for sap solutions 8.4
    samba samba 4.13.0 -
    samba samba 4.14.0
    samba samba 4.15.0 -