// For flags

CVE-2022-45141

Ubuntu Security Notice USN-5936-1

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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).

Dado que la vulnerabilidad de elevación de privilegios de Windows Kerberos RC4-HMAC fue revelada por Microsoft el 8 de noviembre de 2022 y según RFC8429 se asume que rc4-hmac es débil, los DC de Directorio Activo Samba vulnerables emitirán tickets cifrados rc4-hmac a pesar de que el servidor de destino admita un cifrado mejor (por ejemplo, aes256-cts-hmac-sha1-96).

USN-7582-1 fixed vulnerabilities in Samba. The update introduced a regression. This update fixes the problem. Evgeny Legerov discovered that Samba incorrectly handled buffers in certain GSSAPI routines of Heimdal. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. Greg Hudson discovered that Samba incorrectly handled PAC parsing. On 32-bit systems, a remote attacker could use this issue to escalate privileges, or possibly execute arbitrary code. Joseph Sutton discovered that Samba could be forced to issue rc4-hmac encrypted Kerberos tickets. A remote attacker could possibly use this issue to escalate privileges. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. Florent Saudel discovered that Samba incorrectly handled certain Spotlight requests. A remote attacker could possibly use this issue to cause Samba to consume resources, leading to a denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2022-11-10 CVE Reserved
  • 2023-01-24 CVE Published
  • 2025-03-06 CVE Updated
  • 2025-07-23 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-326: Inadequate Encryption Strength
  • CWE-328: Use of Weak Hash
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Samba
Search vendor "Samba"
 Samba
Search vendor "Samba" for product "Samba"
 < 4.15.13
Search vendor "Samba" for product "Samba" and version " < 4.15.13"
-
Affected
Samba
Search vendor "Samba"
 Samba
Search vendor "Samba" for product "Samba"
 >= 4.16.0 < 4.16.8
Search vendor "Samba" for product "Samba" and version " >= 4.16.0 < 4.16.8"
-
Affected