Arch Linux Security Advisory ASA-201901-1 ========================================= Severity: Low Date : 2019-01-08 CVE-ID : CVE-2018-20482 Package : tar Type : denial of service Remote : No Link : https://security.archlinux.org/AVG-841 Summary ======= The package tar before version 1.31-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.31-1. # pacman -Syu "tar>=1.31-1" The problem has been fixed upstream in version 1.31. Workaround ========== None. Description =========== A denial of service issue has been found in GNU Tar versions up to and including 1.30. When creating archives with the --sparse option, tar would loop endlessly if a sparse file had been truncated while being archived. Impact ====== An attacker might be able to cause a denial of service via an archive created with the --sparse option. References ========== https://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html https://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42c https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug https://security.archlinux.org/CVE-2018-20482