Multiple vulnerabilities in Microsoft Windows NetLogon
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2019-1384 CVE-2019-1424 |
| CWE-ID | CWE-287 CWE-300 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Improper Authentication
EUVDB-ID: #VU22718
Risk: Medium
CVSSv3.1: 7 [CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-1384
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the NETLOGON message is able to obtain the session key and sign messages. A remote authenticated attacker can send a specially crafted authentication request, bypass authentication process and gain unauthorized access to another machine using the original user privileges.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows: 7 - 10 1903
Windows Server: 2008 - 2019 1903
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1384
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Man-in-the-Middle (MitM) attack
EUVDB-ID: #VU22664
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-1424
CWE-ID:
CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.
The vulnerability exists due to the Windows Netlogon improperly handles a secure communications channel. A remote attacker can perform a man-in-the-middle attack and downgrade aspects of the connection allowing for further modification of the transmission.
Install updates from vendor's website.
Vulnerable software versionsWindows: 7 - 10 1903
Windows Server: 2008 - 2019 1903
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1424
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
