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CVE-2019-11503

Published: 24 April 2019

snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."

Notes

AuthorNote
jdstrand
fixed via SRU process (security only users get the fix due to
reexec)
attack limited by snap-confine profile
Priority

Low

CVSS 3 base score: 7.5

Status

Package Release Status
snapd
Launchpad, Ubuntu, Debian
bionic
Released (2.39.2+18.04)
cosmic
Released (2.39.2+18.10)
disco
Released (2.39.2+19.04)
eoan
Released (2.39.2+19.10ubuntu1)
precise Does not exist

trusty
Released (2.43.3~14.04)
upstream Pending
(2.39)
xenial
Released (2.39.2ubuntu0.2)
Patches:
upstream: https://github.com/snapcore/snapd/pull/6642