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CVE-2019-1020014: docker-credential-helpers before 0.6.3 has a double free in the List functions.

33
Routine
MEDIUM 5.5WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2019-1020014 is a medium-severity flaw (CVSS 5.5) affecting credential helpers, fedora, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

docker-credential-helpers before 0.6.3 has a double free in the List functions.

Why this priority

  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score5.5 (Medium)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.4% (top 65%)
CISA exploited listNo
WeaknessCWE-415
Published2019-07-29
Last modified2026-06-17
Publisher (CNA): DWF · Vendor: canonical · docker · fedoraproject

Share: LinkedIn · X · Reddit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

docker credential helpers UPGRADE
Affected: < 0.6.3
Fixed in: 0.6.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy credential-helpers || rpm -q credential-helpers || credential-helpers --version
2. UPGRADE to 0.6.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade credential-helpers
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade credential-helpers
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
fedoraproject fedora MITIGATE
Affected: 32
Fixed in: no fixed release known
Safe to downgrade to: a release before 32
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
canonical ubuntu linux MITIGATE
Affected: 16.04 · 18.04 · 19.04
Fixed in: no fixed release known
Safe to downgrade to: a release before 16.04
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-1020014?

credential helpers: upgrade to 0.6.3; fedora: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-1020014 being exploited?

CVE-2019-1020014 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-1020014 affect?

CVE-2019-1020014 affects credential helpers, fedora, ubuntu linux. Severity is medium (CVSS 5.5). docker-credential-helpers before 0.6.3 has a double free in the List functions.

How urgent is CVE-2019-1020014?

Priority 33/100. On your watchlist

Software pages

Docker vulnerabilities · Ubuntu vulnerabilities

References

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