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Gentoo: GLSA-202009-14 Critical: Xen Buffer Overflow Risk

A buffer overflow in Xen might allow remote attacker(s) to execute arbitrary code.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202009-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Xen: Buffer overflow Date: September 29, 2020 Bugs: #738040 ID: 202009-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A buffer overflow in Xen might allow remote attacker(s) to execute arbitrary code. Background ========= Xen is a bare-metal hypervisor. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/xen < 4.13.1-r3 > = 4.13.1-r3 2 app-emulation/xen-tools < 4.13.1-r3 > = 4.13.1-r3 ------------------------------------------------------------------- 2 affected packages Description ========== An out-of-bounds read/write access issue was found in the USB emulator when using QEMU. Impact ===== A remote attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition. Workaround ========= There is no known workaround at this time. Resolution ========= All Xen users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =app-emulation/xen-4.13.1-r3" All Xen tools users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v "> =app-emulation/xen-tools-4.13.1-r3" References ========= [ 1 ] CVE-2020-14364 https://nvd.nist.gov/vuln/detail/CVE-2020-14364 [ 2 ] XSA-335 https://xenbits.xen.org/xsa/advisory-335.html Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202009-14 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2020 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5/ . Gentoo Linux Security Bulletin GLSA 202110-57: Severe vulnerability in OpenSSL permits unauthorized data access.. buffer overflow, xen security, remote code execution, gentoo advisory. . Severity: Critical. LinuxSecurity.com Team

Sep 29, 2020 •Critical Gentoo