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No exploitation reportedFix available

CVE-2019-11503

No exploitation reported by the sources we read.

  • Published2019-04-24
  • Fixed in2.39
  • WeaknessCWE-59

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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."

Timeline

dates in UTC
  1. 2019-04-2421:29CVE publishedNVD

Versions per branch

NVD
Canonical snapd
BranchAffectedFixed in
2.39< 2.392.39

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • snapdUbuntu:18.04:LTSall versions · fixed in 2.39.2+18.04
  • snapdUbuntu:16.04:LTSall versions · fixed in 2.39.2ubuntu0.2
  • snapdDebian:14all versions · fixed in 2.40-1
  • snapdDebian:13all versions · fixed in 2.40-1
  • snapdDebian:12all versions · fixed in 2.40-1

Vendor advisories

  • CVE-2019-11503 Red Hat Product Security

    snapd: remote attacker able to bypass security restriction

Full record on NVD

Fix

  1. Update Canonical snapd to 2.39

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2019-04-24
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-w39p-qmcm-pxpm

Frequently asked questions

What is 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."

Is CVE-2019-11503 actively exploited?

Active exploitation of CVE-2019-11503 has not been confirmed. Its EPSS score was 2.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-11503?

CVE-2019-11503 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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Sources for this record