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[Security] Bump websocket-extensions from 0.1.3 to 0.1.5 #854

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Bumps websocket-extensions from 0.1.3 to 0.1.5. This update includes a security fix.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Regular Expression Denial of Service in websocket-extensions (RubyGem)

Impact

The ReDoS flaw allows an attacker to exhaust the server's capacity to process incoming requests by sending a WebSocket handshake request containing a header of the following form:

Sec-WebSocket-Extensions: a; b="\c\c\c\c\c\c\c\c\c\c ...

That is, a header containing an unclosed string parameter value whose content is a repeating two-byte sequence of a backslash and some other character. The parser takes exponential time to reject this header as invalid, and this will block the processing of any other work on the same thread. Thus if you are running a single-threaded server, such a request can render your service completely unavailable.

Patches

Users should upgrade to version 0.1.5.

Workarounds

... (truncated)

Affected versions: < 0.1.5

Changelog

Sourced from websocket-extensions's changelog.

0.1.5 / 2020-06-02

  • Remove a ReDoS vulnerability in the header parser (CVE-2020-7663)

0.1.4 / 2019-06-10

  • Fix a deprecation warning for using the =~ operator on true
  • Change license from MIT to Apache 2.0
Commits
  • 8108e77 Bump version to 0.1.5
  • c36eb3e Remove ReDoS vulnerability in the Sec-WebSocket-Extensions header parser
  • 8174a4a Test on JRuby 9.{0,1,2} rather than "head"
  • 9605980 Update Ruby versions 2.4 to 2.7 on Travis
  • bd6d0ac Mention license change in the changelog
  • a8c8478 Formatting change: {...} should have spaces inside the braces
  • 242f007 Bump version to 0.1.4
  • 249bcc1 Change markdown formatting of docs.
  • 738a0af Fix deprecation warning about =~ being called on TrueClass.
  • 68c1b21 Fix RSpec warnings about raise_error with no arguments.
  • Additional commits viewable in compare view

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@dependabot-preview dependabot-preview bot added dependencies Pull requests that update a dependency file security Pull requests that address a security vulnerability labels Jun 5, 2020
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