Arch Linux Security Advisory ASA-202103-18 ========================================== Severity: High Date : 2021-03-25 CVE-ID : CVE-2021-3405 Package : libebml Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1554 Summary ======= The package libebml before version 1.4.2-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 1.4.2-1. # pacman -Syu "libebml>=1.4.2-1" The problem has been fixed upstream in version 1.4.2. Workaround ========== None. Description =========== A security issue was found in libebml before version 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml. Impact ====== A crafted file could execute arbitrary code. References ========== https://bugs.archlinux.org/task/70039 https://bugzilla.redhat.com/show_bug.cgi?id=1926990 https://github.com/Matroska-Org/libebml/issues/74 https://github.com/Matroska-Org/libebml/pull/76 https://github.com/Matroska-Org/libebml/commit/3d3d2cff9b012059fa7cb536399b5... https://security.archlinux.org/CVE-2021-3405