An issue was discovered in the gon gem before gon-6.4.0 for Ruby. MultiJson does not honor the escape_mode parameter to escape fields as an XSS protection mechanism. To mitigate, json_dumper.rb in gon now does escaping for XSS by default without relying on MultiJson.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in the gon gem before gon-6.4.0 for Ruby. MultiJson does not honor the escape_mode     parameter to escape fields as an XSS protection mechanism. To mitigate, json_dumper.rb in gon now does     escaping for XSS by default without relying on MultiJson. (CVE-2020-25739)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - An issue was discovered in the gon gem before gon-6.4.0 for Ruby. MultiJson does not honor the escape_mode
    parameter to escape fields as an XSS protection mechanism. To mitigate, json_dumper.rb in gon now does
    escaping for XSS by default without relying on MultiJson. (CVE-2020-25739)

The remote Ubuntu 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4560-1 advisory.

    It was discovered that Gon gem did not properly escape certain input. An attacker could use this     vulnerability to execute a cross-site scripting (XSS) attack.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It was discovered that there was a cross-site scripting (XSS) vulnerability in ruby-gon, a Ruby library to send/convert data to JavaScript from a Ruby application.

For Debian 9 'Stretch', this problem has been fixed in version 6.1.0-1+deb9u1.

We recommend that you upgrade your ruby-gon packages.

For the detailed security status of ruby-gon please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/ruby-gon

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Type	Severity
258278	Linux Distros Unpatched Vulnerability : CVE-2020-25739	Nessus	Misc.	Local	medium
411947	SCA: security update for gon (GHSA-78vq-9j56-wrfr)	Tenable Cloud Security	SCA Checks	Local	medium
411947	SCA: security update for gon (GHSA-78vq-9j56-wrfr)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
141111	Ubuntu 18.04 LTS : Gon gem vulnerability (USN-4560-1)	Nessus	Ubuntu Local Security Checks	Local	medium
140806	Debian DLA-2380-1 : ruby-gon security update	Nessus	Debian Local Security Checks	Local	medium

Detections

Analytics

CVE-2020-25739

medium

Tenable Plugins

medium

medium

medium

medium

medium