- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202007-38 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: QtGui: Arbitrary code execution Date: July 27, 2020 Bugs: #719732 ID: 202007-38 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A use-after-free was discovered in QtGui's Markdown handling code possibly allowing a remote attacker to execute arbitrary code. Background ========= QtGui is a module for the Qt toolkit. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-qt/qtgui < 5.14.2 >= 5.14.2 Description ========== QtGui's setMarkdown has a use-after-free related to QTextMarkdownImporter::insertBlock. 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 QtGui users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">Þv-qt/qtgui-5.14.2" Note that the Qt suite is best kept in sync, so a world upgrade may be advisable to keep your system in a good state. References ========= [ 1 ] CVE-2020-12267 https://nvd.nist.gov/vuln/detail/CVE-2020-12267 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202007-38 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 security@gentoo.org 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