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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0862.2 Microsoft Guidance for Disabling SMBv3 Compression 13 March 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: SMBv3 Publisher: Microsoft Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-0796 Original Bulletin: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200005 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796 Revision History: March 13 2020: Microsoft have made KB4551762 available to patch the vulnerability March 11 2020: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ************************************************************************************** Title: Microsoft Security Update Releases Issued: March 12, 2020 ************************************************************************************** Summary ======= The following CVE and advisory have undergone a major revision increment: * CVE-2020-0796 * ADV200005 Revision Information: ===================== - CVE-2020-0796 | Windows SMBv3 Client/Server Remote Code Execution Vulnerability - https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/2020-0796 - Version: 1.0 - Reason for Revision: Information published. CVE-2020-0796 resolves the issue discussed in ADV200005 (https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200005). Customers who have already installed the updates released on March 10, 2020 for the affected operating systems should install KB4551762 to be protected from this vulnerability. - Originally posted: March 12, 2020 - Updated: N/A - Aggregate CVE Severity Rating: Critical - ADV200005 | Microsoft Guidance for Disabling SMBv3 Compression - https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV200005 - Version: 2.0 - Reason for Revision: CVE-2020-0796 has been published to address this vulnerability. Please see CVE-2020-0796 (https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0796). - Originally posted: March 10, 2020 - Updated: March 12, 2020 - Aggregate CVE Severity Rating: N/A ************************************************************************************** Other Information ================= Recognize and avoid fraudulent email to Microsoft customers: ====================================================================================== If you receive an email message that claims to be distributing a Microsoft security update, it is a hoax that may contain malware or pointers to malicious websites. Microsoft does not distribute security updates via email. The Microsoft Security Response Center (MSRC) uses PGP to digitally sign all security notifications. However, PGP is not required for reading security notifications, reading security bulletins, or installing security updates. 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If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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