Zerologon is a vulnerability in Microsoft's Netlogon Remote Procedural Call (MS-NRPC) protocol. Specifically, this vulnerability occurs due to an incorrect implementation of the AES-128 Counter Feedback mode of operation. This vulnerability was given a CVSS score of 10 by Microsoft and can be carried out by anyone with a foothold in the network. This paper aims to explain the detail and working of MS-NRPC protocol, its vulnerability, and finally cover how to exploit it, something which the original paper by Secura left out.
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Gentoo Linux Security Advisory 202012-24 - Multiple vulnerabilities have been found in Samba, the worst of which could result in a Denial of Service condition. Versions less than 4.12.9 are affected.
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Red Hat Security Advisory 2020-5439-01 - Samba is an open-source implementation of the Server Message Block protocol and the related Common Internet File System protocol, which allow PC-compatible machines to share files, printers, and various information. Issues addressed include a memory leak vulnerability.
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Proof of concept exploit for the ZeroLogin Netlogon privilege escalation vulnerability.
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Ubuntu Security Notice 4559-1 - Tom Tervoort discovered that the Netlogon protocol implemented by Samba incorrectly handled the authentication scheme. A remote attacker could use this issue to forge an authentication token and steal the credentials of the domain admin. While a previous security update fixed the issue by changing the "server schannel" setting to default to "yes", instead of "auto", which forced a secure netlogon channel, this update provides additional improvements. Various other issues were also addressed.
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Ubuntu Security Notice 4510-2 - USN-4510-1 fixed a vulnerability in Samba. This update provides the corresponding update for Ubuntu 14.04 ESM. Tom Tervoort discovered that the Netlogon protocol implemented by Samba incorrectly handled the authentication scheme. A remote attacker could use this issue to forge an authentication token and steal the credentials of the domain admin. Various other issues were also addressed.
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Ubuntu Security Notice 4510-1 - Tom Tervoort discovered that the Netlogon protocol implemented by Samba incorrectly handled the authentication scheme. A remote attacker could use this issue to forge an authentication token and steal the credentials of the domain admin. This update fixes the issue by changing the "server schannel" setting to default to "yes", instead of "auto", which will force a secure netlogon channel. This may result in compatibility issues with older devices. A future update may allow a finer-grained control over this setting. Various other issues were also addressed.
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Proof of concept exploit for the Windows Zerologon vulnerability as noted in CVE-2020-1472. By default, it changes the password of the domain controller account.
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Oracle Solaris 11 Device Driver Utility version 1.3.1 suffers from an insecure use of /tmp that can allow for a race condition which leads to privilege escalation. Included exploit provides a root shell.
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