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Advisories

Bastille through 1.4.4 Jail Escape via Symlink Following in cp, rcp, jcp

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Severity
medium
Date
Affecting

  • bastille <= 1.4.4

CWE
  • CWE-59 Improper Link Resolution Before File Access ('Link Following')
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
George Chen
Description
Bastille through 1.4.4 contains a symlink following vulnerability in the cp.sh, rcp.sh and jcp.sh subcommands that allows jailed users to escape jail isolation. Attackers inside a jail can plant symlinks pointing to host paths or other jail roots, so administrator-run copies overwrite or read host files with root privileges.

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