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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1558 USN-4349-1: EDK II vulnerabilities 1 May 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: edk2 Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Increased Privileges -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2019-14587 CVE-2019-14586 CVE-2019-14575 CVE-2019-14563 CVE-2019-14559 CVE-2019-14558 CVE-2018-12181 CVE-2018-12180 CVE-2018-12178 Reference: ESB-2020.1510 ESB-2020.1464 ESB-2020.0934 ESB-2019.4120 ESB-2019.0760 Original Bulletin: https://usn.ubuntu.com/4349-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4349-1: EDK II vulnerabilities 30 April 2020 edk2 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 19.10 o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS Summary Several security issues were fixed in edk2. Software Description o edk2 - UEFI firmware for 64-bit x86 virtual machines Details A buffer overflow was discovered in the network stack. An unprivileged user could potentially enable escalation of privilege and/or denial of service. This issue was already fixed in a previous release for 18.04 LTS and 19.10. (CVE-2018-12178) A buffer overflow was discovered in BlockIo service. An unauthenticated user could potentially enable escalation of privilege, information disclosure and/or denial of service. This issue was already fixed in a previous release for 18.04 LTS and 19.10. (CVE-2018-12180) A stack overflow was discovered in bmp. An unprivileged user could potentially enable denial of service or elevation of privilege via local access. This issue was already fixed in a previous release for 18.04 LTS and 19.10. (CVE-2018-12181) It was discovered that memory was not cleared before free that could lead to potential password leak. (CVE-2019-14558) A memory leak was discovered in ArpOnFrameRcvdDpc. An attacker could possibly use this issue to cause a denial of service or other unspecified impact. (CVE-2019-14559) An integer overflow was discovered in MdeModulePkg/PiDxeS3BootScriptLib. An attacker could possibly use this issue to cause a denial of service or other unspecified impact. (CVE-2019-14563) It was discovered that the affected version doesn't properly check whether an unsigned EFI file should be allowed or not. An attacker could possibly load unsafe content by bypassing the verification. (CVE-2019-14575) It was discovered that original configuration runtime memory is freed, but it is still exposed to the OS runtime. (CVE-2019-14586) A double-unmap was discovered in TRB creation. An attacker could use it to cause a denial of service or other unspecified impact. (CVE-2019-14587) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 ovmf - 0~20190606.20d2e5a1-2ubuntu1.1 qemu-efi-aarch64 - 0~20190606.20d2e5a1-2ubuntu1.1 qemu-efi-arm - 0~20190606.20d2e5a1-2ubuntu1.1 Ubuntu 18.04 LTS ovmf - 0~20180205.c0d9813c-2ubuntu0.2 qemu-efi-aarch64 - 0~20180205.c0d9813c-2ubuntu0.2 qemu-efi-arm - 0~20180205.c0d9813c-2ubuntu0.2 Ubuntu 16.04 LTS ovmf - 0~20160408.ffea0a2c-2ubuntu0.1 qemu-efi - 0~20160408.ffea0a2c-2ubuntu0.1 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . After a standard system update you need to restart the virtual machines that use the affected firmware to make all the necessary changes. References o CVE-2018-12178 o CVE-2018-12180 o CVE-2018-12181 o CVE-2019-14558 o CVE-2019-14559 o CVE-2019-14563 o CVE-2019-14575 o CVE-2019-14586 o CVE-2019-14587 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXquiL2aOgq3Tt24GAQjQSg//WDIaIXO+KjT48Cd6v8NmOrguK+t+nWdh a+0a0no/+3Muskr1rjPAKSxNXD6YZC9OBiUBJ/OG7ssadLEotr1csZifYmaUWoMR WgRN0uEDEf0zUaX8eq2QCq01a69GoXuea0CJUYMvWVIZtC62rrqQ3aAe7MxHSYFn 5vxnpzBZ73Hh5EbQtSQAzsNb1q+xQToJJFoMt2oDlW8aVVZNfLVkQfvN0pLDdK+u P0xASM8g7OnPzyF8W/I9Is239n1qagWl42pqraQKDcoJpj0HoFpdQSQ8oSCjSOfQ agxeY2kfib/IPfwoQX3Tn05Zn24VDfixv4yE4v3yX88QoricZs+C0ER70htStUvC izyeKasb1RPsWC0pBfX9I8YenStR7iGBlQ+PVOHrZYHY0TzM3vzchIvwDkDz0+qq FwEOYUNpwWk7eGpA4a44xW3RdnRJ5dDUBsCsvNG6AphbbHT5slaW/d9VDwnX+L2B ApfjKOwCy5DmsZogl2F+HrfSiX1lLfw2qhqL4hIziKcVEYw4pgxiutiWcvFta62W FVfS7pqmOTK8ACtoumjIzidEmccWoEr4k+rmryVIICCBQqdqta0t1/jhlQXJ/9Jk I5jfweZKbO9Ri1OU1ySrAjvlNiM5YKCxlS4kCj+UZOr77hNCwLTVPM8hKMohncM4 wiBQD035sjM= =ZX4p -----END PGP SIGNATURE-----