How severe is CVE-2017-14033?

CVE-2017-14033 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2017-14033?

CVE-2017-14033 affects the following packages: openssl (RubyGems). Ecosystems affected: RubyGems.

How do I fix CVE-2017-14033?

Update openssl to 2.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-14033 is resolved across your whole dependency graph.

How do I detect CVE-2017-14033 in my RubyGems dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openssl, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2017-14033 if there is no patch (or I can't update yet)?

Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Is CVE-2017-14033 actively exploited in the wild?

No public exploit code has been indexed for CVE-2017-14033 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2017-14033?

CVE-2017-14033 has an EPSS (Exploit Prediction Scoring System) score of 7.7%, placing it in the 95th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2017-14033?

CVE-2017-14033 is classified as Buffer Overflow (CWE-119). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2017-14033 published, and has it been updated?

CVE-2017-14033 was published on September 19, 2017 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

💎

💎 RubyGems

Not in CISA KEV

HIGH severity

CVE-2017-14033 — openssl

HIGHFix: ruby/openssl@36bf7f4

CVE-2017-14033 is a high-severity (CVSS 7.5) Buffer Overflow vulnerability in openssl. A fix is available for openssl — see the affected versions and patch details below.

Ruby OpenSSL DoS Vulnerability

Also known asGHSA-v6rp-3r3v-hf4p

Published

Sep 19, 2017

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

7.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs95th percentile — riskier than 95% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

💎openssl

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

The decode method in the OpenSSL::ASN1 module in Ruby before 2.2.8, 2.3.x before 2.3.5, and 2.4.x through 2.4.1 allows attackers to cause a denial of service (interpreter crash) via a crafted string. The openssl gem that contains this module is patched in version 2.0.0.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`openssl`	all versions	2.0.0`bundle update openssl --conservative`

Affected Products

1 product · 24 configurations

Application

rubyruby-lang

15 versions

2.2.02.2.12.2.22.2.32.2.42.2.52.2.62.2.72.3.02.3.12.3.22.3.3

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openssl, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update openssl to 2.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-14033 is resolved across your whole dependency graph.
Workarounds
Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

This issue did not affect the versions of ruby as shipped with Red Hat Enterprise Linux 5 and 6, and the versions of rh-ruby24-ruby. This issue affects the versions of ruby as shipped with Red Hat Enterprise Linux 7 and the versions of rh-ruby22-ruby and rh-ruby23-ruby as shipped with Red Hat Software Collections 3.…

Product	Fixed in	Advisory
Red Hat Enterprise Linux 7	`ruby-0:2.0.0.648-33.el7_4`	RHSA-2018:0378
Red Hat Software Collections for Red Hat Enterprise Linux 6	`rh-ruby22-ruby-0:2.2.9-19.el6`	RHSA-2018:0583
Red Hat Software Collections for Red Hat Enterprise Linux 6	`rh-ruby23-ruby-0:2.3.6-67.el6`	RHSA-2018:0585

Frequently Asked Questions

The decode method in the `OpenSSL::ASN1` module in Ruby before 2.2.8, 2.3.x before 2.3.5, and 2.4.x through 2.4.1 allows attackers to cause a denial of service (interpreter crash) via a crafted string. The `openssl` gem that contains this module is patched in version 2.0.0.

O3 Security · Impact-Aware SCA

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