CVE-2020-25719
published 2022-02-18CVE-2020-25719: 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…
PriorityP343high7.2CVSS 3.1
AVNACLPRHUINSUCHIHAH
EPSS
1.69%
76.9th percentile
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.
Affected
46 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | samba | < samba 2:4.13.14+dfsg-1 (bookworm) | samba 2:4.13.14+dfsg-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| msrc | azl3_samba_4.18.3-1_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_samba_4.12.5-6_on_cbl_mariner_2.0 | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux_desktop | — | — |
| redhat | enterprise_linux_eus | — | — |
| redhat | enterprise_linux_eus | — | — |
| redhat | enterprise_linux_for_ibm_z_systems | — | — |
| redhat | enterprise_linux_for_ibm_z_systems | — | — |
| redhat | enterprise_linux_for_ibm_z_systems_eus | — | — |
| redhat | enterprise_linux_for_ibm_z_systems_eus | — | — |
| redhat | enterprise_linux_for_power_big_endian | — | — |
| redhat | enterprise_linux_for_power_little_endian | — | — |
| redhat | enterprise_linux_for_power_little_endian | — | — |
CVSS provenance
nvdv3.17.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
osv7.2HIGH
vendor_debian7.2HIGH
vendor_msrc7.2HIGH
vendor_redhat7.2HIGH
vendor_ubuntu5.9MEDIUM
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GHSA
GHSA-882h-52g4-fpjv: A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication
ghsa_unreviewed·2022-02-19
CVE-2020-25719 [HIGH] CWE-287 GHSA-882h-52g4-fpjv: A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication
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.
OSV
CVE-2020-25719: A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication
osv·2022-02-18·CVSS 7.2
CVE-2020-25719 [HIGH] CVE-2020-25719: A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication
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.
OSV
samba regression
osv·2021-12-13·CVSS 5.9
[MEDIUM] samba regression
samba regression
USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes
introduced a regression in Kerberos authentication in certain environments.
Please see the following upstream bug for more information:
https://bugzilla.samba.org/show_bug.cgi?id=14922
This update fixes the problem.
Original advisory details:
Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client
connections. A remote attacker could possibly use this issue to downgrade
connections to plaintext authentication. (CVE-2016-2124)
Andrew Bartlett discovered that Samba incorrectly mapping domain users to
local users. An authenticated attacker could possibly use this issue to
become root on domain members. (CVE-2020-25717)
Andrew Bartlett discovered that Samba did not correctly sandbox
OSV
samba regressions
osv·2021-12-06·CVSS 5.9
[MEDIUM] samba regressions
samba regressions
USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes
introduced regressions in name mapping and backups.
Please see the following upstream bugs for more information:
https://bugzilla.samba.org/show_bug.cgi?id=14901
https://bugzilla.samba.org/show_bug.cgi?id=14918
This update fixes the problem.
Original advisory details:
Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client
connections. A remote attacker could possibly use this issue to downgrade
connections to plaintext authentication. (CVE-2016-2124)
Andrew Bartlett discovered that Samba incorrectly mapping domain users to
local users. An authenticated attacker could possibly use this issue to
become root on domain members. (CVE-2020-25717)
Andrew Bartlett discovered that Samba
OSV
samba vulnerabilities
osv·2021-11-11·CVSS 5.9
CVE-2016-2124 [MEDIUM] samba vulnerabilities
samba vulnerabilities
Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client
connections. A remote attacker could possibly use this issue to downgrade
connections to plaintext authentication. (CVE-2016-2124)
Andrew Bartlett discovered that Samba incorrectly mapping domain users to
local users. An authenticated attacker could possibly use this issue to
become root on domain members. (CVE-2020-25717)
Andrew Bartlett discovered that Samba did not correctly sandbox Kerberos
tickets issues by an RODC. An RODC could print administrator tickets,
contrary to expectations. (CVE-2020-25718)
Andrew Bartlett discovered that Samba incorrectly handled Kerberos tickets.
Delegated administrators could possibly use this issue to impersonate
accounts, leading to total domain compromise.
Microsoft
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 i
vendor_msrc·2022-02-08·CVSS 7.2
CVE-2020-25719 [HIGH] CWE-362 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 i
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF
Ubuntu
Samba regression
vendor_ubuntu·2021-12-13·CVSS 5.9
[MEDIUM] Samba regression
Title: Samba regression
Summary: USN-5142-1 introduced a regression in Samba.
USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes
introduced a regression in Kerberos authentication in certain environments.
Please see the following upstream bug for more information:
https://bugzilla.samba.org/show_bug.cgi?id=14922
This update fixes the problem.
Original advisory details:
Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client
connections. A remote attacker could possibly use this issue to downgrade
connections to plaintext authentication. (CVE-2016-2124)
Andrew Bartlett discovered that Samba incorrectly mapping domain users to
local users. An authenticated attacker could possibly use this issue to
become root on domain members. (CVE-2020-25717)
An
Ubuntu
Samba regressions
vendor_ubuntu·2021-12-06·CVSS 5.9
[MEDIUM] Samba regressions
Title: Samba regressions
Summary: USN-5142-1 introduced regressions in Samba.
USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes
introduced regressions in name mapping and backups.
Please see the following upstream bugs for more information:
https://bugzilla.samba.org/show_bug.cgi?id=14901
https://bugzilla.samba.org/show_bug.cgi?id=14918
This update fixes the problem.
Original advisory details:
Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client
connections. A remote attacker could possibly use this issue to downgrade
connections to plaintext authentication. (CVE-2016-2124)
Andrew Bartlett discovered that Samba incorrectly mapping domain users to
local users. An authenticated attacker could possibly use this issue to
become root on domain mem
Ubuntu
Samba vulnerabilities
vendor_ubuntu·2021-11-11·CVSS 5.9
CVE-2020-25721 [MEDIUM] Samba vulnerabilities
Title: Samba vulnerabilities
Summary: Several security issues were fixed in Samba.
Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client
connections. A remote attacker could possibly use this issue to downgrade
connections to plaintext authentication. (CVE-2016-2124)
Andrew Bartlett discovered that Samba incorrectly mapping domain users to
local users. An authenticated attacker could possibly use this issue to
become root on domain members. (CVE-2020-25717)
Andrew Bartlett discovered that Samba did not correctly sandbox Kerberos
tickets issues by an RODC. An RODC could print administrator tickets,
contrary to expectations. (CVE-2020-25718)
Andrew Bartlett discovered that Samba incorrectly handled Kerberos tickets.
Delegated administrators could possibly use this issu
Red Hat
samba: Samba AD DC did not always rely on the SID and PAC in Kerberos tickets
vendor_redhat·2021-11-09·CVSS 7.2
CVE-2020-25719 [HIGH] CWE-287 samba: Samba AD DC did not always rely on the SID and PAC in Kerberos tickets
samba: Samba AD DC did not always rely on the SID and PAC in Kerberos tickets
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.
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.
Package: samba (Red Hat Enterprise Linux 6) - Not aff
Debian
CVE-2020-25719: samba - A flaw was found in the way Samba, as an Active Directory Domain Controller, imp...
vendor_debian·2020·CVSS 7.2
CVE-2020-25719 [HIGH] CVE-2020-25719: samba - A flaw was found in the way Samba, as an Active Directory Domain Controller, imp...
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.
Scope: local
bookworm: resolved (fixed in 2:4.13.14+dfsg-1)
bullseye: resolved (fixed in 2:4.13.13+dfsg-1~deb11u2)
forky: resolved (fixed in 2:4.13.14+dfsg-1)
sid: resolved (fixed in 2:4.13.14+dfsg-1)
trixie: resolved (fixed in 2:4.13.14+dfsg-1)
No detection rules found.
No public exploits indexed.
2022-02-18
Published