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
| Author | Note |
|---|---|
| jdstrand | fixed via SRU process (security only users get the fix due to reexec) attack limited by snap-confine profile |
Priority
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)
|
|
| trusty |
Released
(2.43.3~14.04)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Pending
(2.39)
|
|
| xenial |
Released
(2.39.2ubuntu0.2)
|
|
|
Patches: upstream: https://github.com/snapcore/snapd/pull/6642 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |