GLSA-200512-17 : scponly: Multiple privilege escalation issues
High Nessus Plugin ID 20358
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200512-17 (scponly: Multiple privilege escalation issues)
Max Vozeler discovered that the scponlyc command allows users to chroot into arbitrary directories. Furthermore, Pekka Pessi reported that scponly insufficiently validates command-line parameters to a scp or rsync command.
A local attacker could gain root privileges by chrooting into arbitrary directories containing hardlinks to setuid programs. A remote scponly user could also send malicious parameters to a scp or rsync command that would allow to escape the shell restrictions and execute arbitrary programs.
There is no known workaround at this time.
SolutionAll scponly users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/scponly-4.2'