Vulnerability Name:

CVE-2020-25721 (CCN-218109)

Assigned:2020-09-16
Published:2021-11-08
Updated:2022-03-22
Summary:Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network
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
7.6 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H)
6.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): High
CVSS v2 Severity:6.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
8.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2020-25721

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2021728

Source: MISC
Type: Issue Tracking, Vendor Advisory
https://bugzilla.samba.org/show_bug.cgi?id=14725

Source: CCN
Type: The Samba-Bugzilla - Bug 14834
[SECURITY] Andrew's Kerberos Concerns and other issues (Nov 9 2021 Release bug)

Source: XF
Type: UNKNOWN
samba-cve202025721-priv-esc(218109)

Source: CCN
Type: Samba Web site
Kerberos acceptors need easy access to stable AD identifiers (eg objectSid)

Source: MISC
Type: Vendor Advisory
https://www.samba.org/samba/security/CVE-2020-25721.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.13.0 and < 4.13.14)
  • OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.14.0 and < 4.14.10)
  • OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.15.0 and < 4.15.2)

  • Configuration CCN 1:
  • cpe:/a:samba:samba:4.0.0:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    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:7682
    P
    libtiff-devel-4.0.9-150000.45.25.1 on GA media (Moderate)
    2023-06-12
    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: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:3072
    P
    fuse-2.9.3-6.3.1 on GA media (Moderate)
    2022-06-28
    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: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:4303
    P
    Security update for samba (Critical)
    2022-02-14
    oval:org.opensuse.security:def:5339
    P
    Security update for samba (Critical)
    2022-02-14
    oval:org.opensuse.security:def:6156
    P
    Security update for samba (Critical)
    2022-02-14
    oval:org.opensuse.security:def:112126
    P
    ctdb-4.15.2+git.193.a4d6307f1fd-1.1 on GA media (Moderate)
    2022-01-17
    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
    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
    BACK
    samba samba *
    samba samba *
    samba samba *
    samba samba 4.0.0