CVE-2019-11503
snap-confine as included in snapd before 2.39 did not guard against symlink races when performing...
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."
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2019-11503- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-59
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2019-11503- Updated
- 2026-11-02
EUVDEUVD-2019-3176 No score
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."
- Record
EUVD-2019-3176- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w39p-qmcm-pxpm
snap-confine as included in snapd before 2.39 did not guard against symlink races when performing...
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."
- Record
GHSA-w39p-qmcm-pxpm- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-59
- Updated
- 2026-11-02
OSV
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."
- Record
CVE-2019-11503- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2019-11503
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."
- Record
DEBIAN-CVE-2019-11503- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-11503
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."
- Record
UBUNTU-CVE-2019-11503- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
snapdDebian:12 |
before 2.40-1 | 2.40-1 |
snapdDebian:13 |
before 2.40-1 | 2.40-1 |
snapdDebian:14 |
before 2.40-1 | 2.40-1 |
snapdUbuntu:16.04:LTS |
before 2.39.2ubuntu0.2, plus listed versions 1.91.9.1.11.9.22.02.0.1 Show 34 moreShow less2.0.22.0.32.0.52.0.82.0.92.0.102.11+0.16.042.12+0.16.042.132.14.2~16.042.15.2ubuntu12.16ubuntu32.17.1ubuntu12.20.1ubuntu12.212.22.22.22.32.22.62.23.12.24.12.252.26.102.27.52.28.52.29.4.22.32.3.22.32.92.33.1ubuntu22.34.22.34.2ubuntu0.12.37.42.37.4ubuntu0.12.382.39.2 |
2.39.2ubuntu0.2 |
snapdUbuntu:18.04:LTS |
before 2.39.2+18.04, plus listed versions 2.28.5+17.102.29.4.1+18.042.29.4.2+18.042.31.1+18.042.32+18.04~pre5 Show 14 moreShow less2.32+18.04~pre62.32+18.042.32.3.2+18.042.32.5+18.042.32.8+18.042.32.9+18.042.33.1+18.04ubuntu22.34.2+18.042.34.2+18.04.12.37.1+18.042.37.1.1+18.042.37.4+18.042.37.4+18.04.12.38+18.04 |
2.39.2+18.04 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-11503 is a high vulnerability (CVSS 7.5) in Canonical Snapd, published April 24, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.42%, the 84th percentile. Fixed in snapd 2.40-1.
References
openwall.com/lists/oss-security/2019/04/18/4
github.com/snapcore/snapd/pull/6642
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L
nvd.nist.gov/vuln/detail/CVE-2019-11503