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:
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.
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Bumps websocket-extensions from 0.1.4 to 0.1.5. This update includes a security fix.
Vulnerabilities fixed
Sourced from The GitHub Security Advisory Database.
Changelog
Sourced from websocket-extensions's changelog.
Commits
8108e77Bump version to 0.1.5c36eb3eRemove ReDoS vulnerability in the Sec-WebSocket-Extensions header parser8174a4aTest on JRuby 9.{0,1,2} rather than "head"9605980Update Ruby versions 2.4 to 2.7 on Travisbd6d0acMention license change in the changeloga8c8478Formatting change: {...} should have spaces inside the bracesDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase.Dependabot commands and options
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