CVE-2022-37966
published 2022-11-09CVE-2022-37966: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
PriorityP346high8.1CVSS 3.1
AVNACHPRNUINSUCHIHAH
EPSS
2.77%
84.7th percentile
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Affected
30 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | samba | < samba 2:4.17.4+dfsg-1 (bookworm) | samba 2:4.17.4+dfsg-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | — | — |
| microsoft | windows_server_2008_service_pack_2 | — | — |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012_r2 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2019 | — | — |
| microsoft | windows_server_2022 | — | — |
| msrc | windows_server_2008_for_32-bit_systems_service_pack_2 | — | — |
| msrc | windows_server_2008_for_x64-based_systems_service_pack_2 | — | — |
| msrc | windows_server_2008_r2_for_x64-based_systems_service_pack_1 | — | — |
| msrc | windows_server_2012 | — | — |
| msrc | windows_server_2012_r2 | — | — |
| msrc | windows_server_2016 | — | — |
| msrc | windows_server_2019 | — | — |
| msrc | windows_server_2022 | — | — |
| samba | samba | < 4.15.13 | 4.15.13 |
| samba | samba | >= 0 < 2:4.17.4+dfsg-1 | 2:4.17.4+dfsg-1 |
| samba | samba | >= 0 < 2:4.17.4+dfsg-1 | 2:4.17.4+dfsg-1 |
| samba | samba | >= 0 < 2:4.17.4+dfsg-1 | 2:4.17.4+dfsg-1 |
| samba | samba | >= 0 < 2:4.15.13+dfsg-0ubuntu0.20.04.1 | 2:4.15.13+dfsg-0ubuntu0.20.04.1 |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
osv8.1HIGH
vendor_debian8.1HIGH
vendor_msrc8.1HIGH
vendor_redhat8.1HIGH
vendor_ubuntu6.5MEDIUM
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Ubuntu
Samba vulnerabilities
vendor_ubuntu·2023-03-08·CVSS 6.5
CVE-2022-37966 [MEDIUM] Samba vulnerabilities
Title: Samba vulnerabilities
Summary: Several security issues were fixed in Samba.
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.
(CVE-2022-3437)
Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos
keys. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-37966, CVE-2022-37967)
It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure
Channel. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-38023)
Greg Hudson discovered that Samba incorrectly handled PAC parsing. On
32-bit systems, a remote attacker could use this issue to
Ubuntu
Samba regression
vendor_ubuntu·2023-01-26·CVSS 5.9
[MEDIUM] Samba regression
Title: Samba regression
Summary: USN 5822-1 introduced regressions on Ubuntu 20.04 LTS.
USN-5822-1 fixed vulnerabilities in Samba. The update for Ubuntu 20.04 LTS
introduced regressions in certain environments. Pending investigation of
these regressions, this update temporarily reverts the security fixes.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Samba incorrectly handled the bad password count
logic. A remote attacker could possibly use this issue to bypass bad
passwords lockouts. This issue was only addressed in Ubuntu 22.10.
(CVE-2021-20251)
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
Ubuntu
Samba vulnerabilities
vendor_ubuntu·2023-01-24·CVSS 5.9
CVE-2022-37966 [MEDIUM] Samba vulnerabilities
Title: Samba vulnerabilities
Summary: Several security issues were fixed in Samba.
It was discovered that Samba incorrectly handled the bad password count
logic. A remote attacker could possibly use this issue to bypass bad
passwords lockouts. This issue was only addressed in Ubuntu 22.10.
(CVE-2021-20251)
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.
(CVE-2022-3437)
Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos
keys. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-37966, CVE-2022-37967)
It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure
Red Hat
samba: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.
vendor_redhat·2022-12-16·CVSS 8.1
CVE-2022-37966 [HIGH] CWE-269 samba: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.
samba: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Statement: The samba package as shipped with Red Hat Enterprise Linux 6, 7, 8 and 9 and Red Hat Gluster is not affected by this issue as Red Hat doesn't provide the AD domain controller capability with it.
Package: samba (Red Hat Enterprise Linux 6) - Not affected
Package: samba (Red Hat Enterprise Linux 7) - Not affected
Package: samba (Red Hat Enterprise Linux 8) - Not affected
Package: samba (Red Hat Enterprise Linux 9) - Not affected
Package: samba (Red Hat Storage 3) - Not affected
Microsoft
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
vendor_msrc·2022-11-08·CVSS 8.1
CVE-2022-37966 [HIGH] Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
FAQ: How could an attacker exploit this vulnerability?
An unauthenticated attacker could conduct an attack that could leverage cryptographic protocol vulnerabilities in RFC 4757 (Kerberos encryption type RC4-HMAC-MD5) and MS-PAC (Privilege Attribute Certificate Data Structure specification) to bypass security features in a Windows AD environment.
FAQ: Where can I find more information about these changes?
For more information please see How to manage the Kerberos Protocol changes related to CVE-2022-37966.
FAQ: I am running Windows Server 2022 Datacenter: Azure Edition (Server Core) but the hotpatch (Windows Server 2022 Datacenter: Azure Edition (Hotpatch)) for it is not listed in the Security Updates table. Is there an upda
Debian
CVE-2022-37966: samba - Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
vendor_debian·2022·CVSS 8.1
CVE-2022-37966 [HIGH] CVE-2022-37966: samba - Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Scope: local
bookworm: resolved (fixed in 2:4.17.4+dfsg-1)
bullseye: open
forky: resolved (fixed in 2:4.17.4+dfsg-1)
sid: resolved (fixed in 2:4.17.4+dfsg-1)
trixie: resolved (fixed in 2:4.17.4+dfsg-1)
OSV
samba vulnerabilities
osv·2023-03-08·CVSS 6.5
CVE-2022-3437 [MEDIUM] samba vulnerabilities
samba vulnerabilities
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.
(CVE-2022-3437)
Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos
keys. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-37966, CVE-2022-37967)
It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure
Channel. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-38023)
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. (CVE
OSV
samba regression
osv·2023-01-26·CVSS 5.9
[MEDIUM] samba regression
samba regression
USN-5822-1 fixed vulnerabilities in Samba. The update for Ubuntu 20.04 LTS
introduced regressions in certain environments. Pending investigation of
these regressions, this update temporarily reverts the security fixes.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Samba incorrectly handled the bad password count
logic. A remote attacker could possibly use this issue to bypass bad
passwords lockouts. This issue was only addressed in Ubuntu 22.10.
(CVE-2021-20251)
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.
(CVE-2022-3437)
Tom Tervoort discovered that Samba incorrec
OSV
samba vulnerabilities
osv·2023-01-24·CVSS 5.9
CVE-2021-20251 [MEDIUM] samba vulnerabilities
samba vulnerabilities
It was discovered that Samba incorrectly handled the bad password count
logic. A remote attacker could possibly use this issue to bypass bad
passwords lockouts. This issue was only addressed in Ubuntu 22.10.
(CVE-2021-20251)
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.
(CVE-2022-3437)
Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos
keys. A remote attacker could possibly use this issue to elevate
privileges. (CVE-2022-37966, CVE-2022-37967)
It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure
Channel. A remote attacker could possibly use this issue to e
GHSA
GHSA-jrg7-vpcv-rf8r: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
ghsa_unreviewed·2022-11-10
CVE-2022-37966 [HIGH] GHSA-jrg7-vpcv-rf8r: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.
OSV
CVE-2022-37966: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
osv·2022-11-09·CVSS 8.1
CVE-2022-37966 [HIGH] CVE-2022-37966: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
No detection rules found.
No public exploits indexed.
Qualys
November 2022 Patch Tuesday | Microsoft Releases 65 New Vulnerabilities With 10 Critical; Adobe Releases Zero Advisories (for the First Time in Six Years).
blogs_qualys·2022-11-08·CVSS 7.5
[HIGH] November 2022 Patch Tuesday | Microsoft Releases 65 New Vulnerabilities With 10 Critical; Adobe Releases Zero Advisories (for the First Time in Six Years).
## Table of Contents
Microsoft Patch Tuesday Summary
The November 2022 Microsoft Vulnerabilities are Classified as Follows:
OpenSSL 3.x Critical Vulnerability Highlights
OpenSSL 3.x Related Blogs and Resources
Microsoft Addressed Six Zero-Day Vulnerabilities
Microsoft Patch Tuesday Critical Vulnerability Highlights
Microsoft Release Summary
Adobe Security Bulletins and Advisories
About Qualys Patch Tuesday
Qualys Threat Research Blog Posts
Qualys Threat Protection High-Rated Advisories
Discover and Prioritize Vulnerabilities in Vulnerability Management Detection Response(VMDR)
Rapid Response with Patch Management (PM)
Extend the Power of VMDR to Enterprise Mobile Devices With Qualys VMDR Mobile
Execute Mitigation UsingCustom Assessment and Remediation(CAR)
Patch Tuesday Is
Talos
Microsoft Patch Tuesday for November 2022 — Snort rules and prominent vulnerabilities
blogs_talos·2022-11-08·CVSS 8.1
CVE-2022-41039 [HIGH] Microsoft Patch Tuesday for November 2022 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for November 2022 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update on Tuesday, disclosing 62 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical” and the rest are classified as “Important.”
Three of the critical entries are remote code execution (RCE) vulnerabilities for Windows Point-to-Point Tunneling Protocol (PPTP).
CVE-2022-41039
CVE-2022-41044
CVE-2022-41088
An unauthenticated attacker can send a specially crafted request to an RAS (Remote Access Server), which may lead to remote code execution. Although according to Microsoft, these three vulnerabilities are less likely to be exploited, as the attacker must win a complex race condition. In August of 2022’s Patch Tuesday release, several v
Qualys
November 2022 Patch Tuesday | Microsoft Releases 65 New Vulnerabilities With 10 Critical; Adobe Releases Zero Advisories (for the First Time in Six Years). | Qualys
blogs_qualys·2022-11-08·CVSS 7.5
[HIGH] November 2022 Patch Tuesday | Microsoft Releases 65 New Vulnerabilities With 10 Critical; Adobe Releases Zero Advisories (for the First Time in Six Years). | Qualys
#### Table of Contents
- Microsoft Patch Tuesday Summary
- The November 2022 Microsoft Vulnerabilities are Classified as Follows:
- OpenSSL 3.x Critical Vulnerability Highlights
- OpenSSL 3.x Related Blogs and Resources
- Microsoft Addressed Six Zero-Day Vulnerabilities
- Microsoft Patch Tuesday Critical Vulnerability Highlights
- Microsoft Release Summary
- Adobe Security Bulletins and Advisories
- About Qualys Patch Tuesday
- Qualys Threat Research Blog Posts
- Qualys Threat Protection High-Rated Advisories
- Discover and Prioritize Vulnerabilities in Vulnerability Management Detection Response(VMDR)
- Rapid Response with Patch Management (PM)
- Extend the Power of VMDR to Enterprise Mobile Devices With Qualys VMDR Mobile
- Execute Mitigation UsingCustom Assessment and Remediation(CAR)
Talos
Microsoft Patch Tuesday for November 2022 — Snort rules and prominent vulnerabilities
blogs_talos·2022-11-08·CVSS 8.1
CVE-2022-41039 [HIGH] Microsoft Patch Tuesday for November 2022 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update on Tuesday, disclosing 62 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical” and the rest are classified as “Important.”
Three of the critical entries are remote code execution (RCE) vulnerabilities for Windows Point-to-Point Tunneling Protocol (PPTP).
- CVE-2022-41039
- CVE-2022-41044
- CVE-2022-41088
An unauthenticated attacker can send a specially crafted request to an RAS (Remote Access Server), which may lead to remote code execution. Although according to Microsoft, these three vulnerabilities are less likely to be exploited, as the attacker must win a complex race condition. In August of 2022’s Patch Tuesday release, several vulnerabilities for Windows PPTP were also disclosed.
Another notable vulnerability in
Crowdstrike
November 2022 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] November 2022 Patch Tuesday: Updates and Analysis
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
2022-11-09
Published