Tar: Denial of service

Tar: Denial of service A vulnerability in Tar could led to a Denial of Service condition. tar 2019-03-10 2019-03-10 674210 local 1.30-r1 1.30-r1

The Tar program provides the ability to create and manipulate tar archives.

The sparse_dump_region function in sparse.c file in Tar allows an infinite loop using the --sparse option.

A local attacker could cause a Denial of Service condition by modifying a file that is supposed to be archived by a different user’s process (e.g., a system backup running as root).

There is no known workaround at this time.

All Tar users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-arch/tar-1.30-r1"

CVE-2018-20482 Zlogene Zlogene