Vulnerability   
Search   
    Search 324607 CVE descriptions
and 146377 test descriptions,
access 10,000+ cross references.
Tests   CVE   All  

Test ID:1.3.6.1.4.1.25623.1.0.844580
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory (USN-4502-1)
Summary:The remote host is missing an update for the 'ruby-websocket-extensions' package(s) announced via the USN-4502-1 advisory.
Description:Summary:
The remote host is missing an update for the 'ruby-websocket-extensions' package(s) announced via the USN-4502-1 advisory.

Vulnerability Insight:
It was discovered that websocket-extensions does not properly parse
special headers. A remote attacker could use this issue to cause regex
backtracking, resulting in a denial of service. (CVE-2020-7663)

Affected Software/OS:
'ruby-websocket-extensions' package(s) on Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04.

Solution:
Please install the updated package(s).

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-7663
https://blog.jcoglan.com/2020/06/02/redos-vulnerability-in-websocket-extensions
https://github.com/faye/websocket-extensions-ruby/commit/aa156a439da681361ed6f53f1a8131892418838b
https://github.com/faye/websocket-extensions-ruby/security/advisories/GHSA-g6wq-qcwm-j5g2
https://snyk.io/vuln/SNYK-RUBY-WEBSOCKETEXTENSIONS-570830
https://lists.debian.org/debian-lts-announce/2020/08/msg00031.html
https://usn.ubuntu.com/4502-1/
CopyrightCopyright (C) 2020 Greenbone AG

This is only one of 146377 vulnerability tests in our test suite. Find out more about running a complete security audit.

To run a free test of this vulnerability against your system, register below.




© 1998-2025 E-Soft Inc. All rights reserved.