CVE-2014-0019: Stack-based buffer overflow in socat 1.3.0.0 through 1.7.2.2 and 2.0.0-b1 through 2.0.0-b6 allows local users

Routine

LOW 1.9DOWNGRADEMITIGATEMITIGATE

CVE-2014-0019 is a low-severity flaw (CVSS 1.9) affecting socat, fedora, opensuse. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in socat 1.3.0.0 through 1.7.2.2 and 2.0.0-b1 through 2.0.0-b6 allows local users to cause a denial of service (segmentation fault) via a long server name in the PROXY-CONNECT address in the command line.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	1.9 (Low)
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-119
Published	2014-02-04
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: dest-unreach · fedoraproject · opensuse

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

Am I affected?

Timeline

2014-02-04 21:55 UTCPublished CVE record published
2026-06-17 00:02 UTCUpdated Record last modified

dest-unreach socat DOWNGRADE

Affected: 2.0.0 b1 · 2.0.0 b2 · 2.0.0 b3 · 2.0.0 b4 · 2.0.0 b5 · 2.0.0 b6 · 1.3.0.0 · 1.3.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.0.0

1. Check installed version

apt-cache policy socat || rpm -q socat || socat --version

2. No fixed release: DOWNGRADE to a release before 1.3.0.0 (Debian / Ubuntu)

apt-cache madison socat sudo apt install socat=<VERSION_BEFORE_1.3.0.0> sudo apt-mark hold socat

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list socat sudo dnf downgrade socat-<VERSION_BEFORE_1.3.0.0> sudo dnf versionlock add socat

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

fedoraproject fedora MITIGATE

Affected: 19 · 20

Fixed in: no fixed release known

Safe to downgrade to: a release before 19

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.

opensuse opensuse MITIGATE

Affected: 13.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.1

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-2014-0019?

socat: downgrade or apply the listed mitigation; fedora: mitigate or apply the listed mitigation; opensuse: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-0019 being exploited?

CVE-2014-0019 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-2014-0019 affect?

CVE-2014-0019 affects socat, fedora, opensuse. Severity is low (CVSS 1.9). Stack-based buffer overflow in socat 1.3.0.0 through 1.7.2.2 and 2.0.0-b1 through 2.0.0-b6 allows local users to cause a denial of service (segmentation fault) via a long server name in the PROXY-CONNECT address in the command line.

How urgent is CVE-2014-0019?

Priority 15/100. No elevated risk signals yet.

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References

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