ArchLinux: 202103-18: libebml: arbitrary code execution
Summary
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.
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.
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/3d3d2cff9b012059fa7cb536399b582cc796e04f https://security.archlinux.org/CVE-2021-3405
Workaround
None.