Improper Authentication Affecting samba-devel package, versions <0:4.10.16-9.el7_9
Threat Intelligence
Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-CENTOS7-SAMBADEVEL-2179761
- published26 Jul 2021
- disclosed11 Sept 2020
Introduced: 11 Sep 2020
CVE-2020-1472 (opens in a new tab)How to fix?
Upgrade Centos:7 samba-devel to version 0:4.10.16-9.el7_9 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream samba-devel package and not the samba-devel package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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.
References
- https://www.kb.cert.org/vuls/id/490028
- https://www.synology.com/security/advisory/Synology_SA_20_21
- https://access.redhat.com/security/cve/CVE-2020-1472
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H4OTFBL6YDVFH2TBJFJIE4FMHPJEEJK3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ST6X3A2XXYMGD4INR26DQ4FP4QSM753B/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TAPQQZZAT4TG3XVRTAFV2Y3S7OAHFBUP/
- https://security.gentoo.org/glsa/202012-24
- http://packetstormsecurity.com/files/159190/Zerologon-Proof-Of-Concept.html
- http://packetstormsecurity.com/files/160127/Zerologon-Netlogon-Privilege-Escalation.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html
- http://www.openwall.com/lists/oss-security/2020/09/17/2
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1472
- https://access.redhat.com/errata/RHSA-2020:5439
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00080.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00086.html
- https://usn.ubuntu.com/4510-1/
- https://usn.ubuntu.com/4510-2/
- https://usn.ubuntu.com/4559-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4OTFBL6YDVFH2TBJFJIE4FMHPJEEJK3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ST6X3A2XXYMGD4INR26DQ4FP4QSM753B/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAPQQZZAT4TG3XVRTAFV2Y3S7OAHFBUP/
- https://www.exploit-db.com/exploits/49071
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog