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CVE-2019-16779

5.8 · MEDIUM

In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket.

Published Dec 16, 2019CWE-664EPSS 1.66%

Overview

CVE-2019-16779 is a medium-severity vulnerability. It was published on December 16, 2019 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. Subsequent requests would then read this data, returning content from the previous response. The race condition window appears to be short, and it would be difficult to purposefully exploit this.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2020-01/msg00021.htmlReflists.opensuse.org/opensuse-security-announce/2020-01/msg00062.htmlGitHubgithub.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29GitHubgithub.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9Reflists.debian.org/debian-lts-announce/2020/01/msg00015.htmlReflists.opensuse.org/opensuse-security-announce/2020-01/msg00021.htmlReflists.opensuse.org/opensuse-security-announce/2020-01/msg00062.htmlGitHubgithub.com/excon/excon/commit/ccb57d7a422f020dc74f1de4e8fb505ab46d8a29GitHubgithub.com/excon/excon/security/advisories/GHSA-q58g-455p-8vw9Reflists.debian.org/debian-lts-announce/2020/01/msg00015.html

How CyberStrike helps

Frequently asked questions

What is CVE-2019-16779?

CVE-2019-16779 is a medium-severity vulnerability. It was published on December 16, 2019 and has a CVSS 3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2019-16779?

This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-16779?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-16779?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-16779 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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