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ubuntucveUbuntu.comUB:CVE-2022-45141
HistoryDec 16, 2022 - 12:00 a.m.

CVE-2022-45141

2022-12-1600:00:00
ubuntu.com
ubuntu.com
33
windows
kerberos
elevation of privilege
vulnerability
microsoft
samba
active directory
encryption
rc4-hmac
tickets

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.002

Percentile

51.8%

JSON

Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that
rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac
encrypted tickets despite the target server supporting better encryption
(eg aes256-cts-hmac-sha1-96).

Bugs

Notes

Author Note
mdeslaur only affects 4.15.x and earlier The focal samba update was temporarily reverted by USN 5822-2 because it introduced regressions. It was later updated again with USN 5936-1.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchsamba< anyUNKNOWN
ubuntu20.04noarchsamba< 2:4.15.13+dfsg-0ubuntu0.20.04.1UNKNOWN
ubuntu22.04noarchsamba< 2:4.15.13+dfsg-0ubuntu1UNKNOWN
ubuntu16.04noarchsamba< anyUNKNOWN

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CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.002

Percentile

51.8%

JSON
Related for UB:CVE-2022-45141
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