GKSu 2.0.2, when sudo-mode is not enabled, uses " (double quote) characters
in a gksu-run-helper argument, which allows attackers to execute arbitrary
commands in certain situations involving an untrusted substring within this
argument, as demonstrated by an untrusted filename encountered during
installation of a VirtualBox extension pack.
 mdeslaur> in Ubuntu, sudo-mode is the default, and the root account has
 mdeslaur> no password. On top of that, the fault actually lies in
 mdeslaur> VirtualBox that is not properly escaping the filename before
 mdeslaur> calling gksu.
Source: gksu (LP Ubuntu Debian)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was needed)
Ubuntu 14.04 ESM (Trusty Tahr):needed
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
More Information

Updated: 2019-05-15 17:14:32 UTC (commit 2d71aefac924bf16479c12958688c37878e881eb)