CVE-2020-1472 in microsoft windows server 1903
LogPulse has a published detection rule for this CVE: it raises a notable when someone tries to exploit it.
What the vulnerability is
An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network. To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access. Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels. For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472 (updated September 28, 2020). When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.
Affected software: microsoft windows server 1903, microsoft windows server 1909, microsoft windows server 2004, microsoft windows server 2008, microsoft windows server 2012, microsoft windows server 2016, microsoft windows server 2019, microsoft windows server 20h2, fedoraproject fedora, opensuse leap
Scores
- CVSS: 5.5 (medium)
- EPSS: 99.39% chance of exploitation in the next 30 days
- CISA KEV: Known exploited, listed 2021-11-03, used in ransomware
- Published: 2020-08-17
What LogPulse has for it
- Detection rule: Yes, published
- Agent check (vulnerable version): No
- Mitigation: No
Source data: NIST NVD, CISA KEV and FIRST EPSS. LogPulse processes new CVEs every hour.
We build every detection with great care, but no two environments are the same. Log sources, parsing and configuration differ, so test a detection in your own environment before you rely on it.