CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
77.2%
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. (CVE-2020-25719)
Andrew Bartlett discovered that Samba did not provide stable AD
identifiers to Kerberos acceptors. (CVE-2020-25721)
Andrew Bartlett discovered that Samba did not properly check sensitive
attributes. An authenticated attacker could possibly use this issue to
escalate privileges. (CVE-2020-25722)
Stefan Metzmacher discovered that Samba incorrectly handled certain large
DCE/RPC requests. A remote attacker could possibly use this issue to
bypass signature requirements. (CVE-2021-23192)
William Ross discovered that Samba incorrectly handled memory. A remote
attacker could use this issue to cause Samba to crash, resulting in a
denial of service, or possibly escalate privileges. (CVE-2021-3738)
Joseph Sutton discovered that Samba incorrectly handled certain TGS
requests. An authenticated attacker could possibly use this issue to cause
Samba to crash, resulting in a denial of service. (CVE-2021-3671)
The fix for CVE-2020-25717 results in possible behaviour changes that could
affect certain environments. Please see the upstream advisory for more
information:
<https://www.samba.org/samba/security/CVE-2020-25717.html>
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Ubuntu | 21.10 | noarch | samba | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | ctdb | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | ctdb-dbgsym | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | libnss-winbind | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | libnss-winbind-dbgsym | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | libpam-winbind | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | libpam-winbind-dbgsym | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | libsmbclient | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | libsmbclient-dbgsym | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
Ubuntu | 21.10 | noarch | libsmbclient-dev | < 2:4.13.14+dfsg-0ubuntu0.21.10.1 | UNKNOWN |
ubuntu.com/security/CVE-2016-2124
ubuntu.com/security/CVE-2020-25717
ubuntu.com/security/CVE-2020-25718
ubuntu.com/security/CVE-2020-25719
ubuntu.com/security/CVE-2020-25721
ubuntu.com/security/CVE-2020-25722
ubuntu.com/security/CVE-2021-23192
ubuntu.com/security/CVE-2021-3671
ubuntu.com/security/CVE-2021-3738
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
77.2%