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Gentoo: GLSA-202003-13 Normal: musl Buffer Overflow Impact and Resolution

A stack-based buffer overflow in musl might allow an attacker to have an application dependent impact.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202003-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: musl: Stack-based buffer overflow Date: March 14, 2020 Bugs: #711276 ID: 202003-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A stack-based buffer overflow in musl might allow an attacker to have an application dependent impact. Background ========= musl is an implementation of the C standard library built on top of the Linux system call API, including interfaces defined in the base language standard, POSIX, and widely agreed-upon extensions. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-libs/musl < 1.1.24 > = 1.1.24 Description ========== A flaw in musl libc's arch-specific math assembly code for i386 was found which can lead to x87 stack overflow in the execution of subsequent math code. Impact ===== Impact depends on how the application built against musl libc handles the ABI-violating x87 state. Workaround ========= There is no known workaround at this time. Resolution ========= All musl users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =sys-libs/musl-1.1.24" References ========= [ 1 ] CVE-2019-14697 https://nvd.nist.gov/vuln/detail/CVE-2019-14697 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo SecurityWebsite: https://security.gentoo.org/glsa/202003-13 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 GLSA 202203-14 discusses a critical security issue in NetBSD's kernel, which may lead to system crashes. Immediate action advised.. Gentoo Security Advisory, musl Stack Overflow, Application Impact, Upgrade Required. . LinuxSecurity.com Team

Mar 14, 2020 Gentoo