Regular Expression Denial of Service in websocket-extensions (NPM package)
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 0.1.3 to 0.1.4. This update includes a security fix.
Vulnerabilities fixed
Sourced from The GitHub Security Advisory Database.
Changelog
Sourced from websocket-extensions's changelog.
Commits
8efd0cdBump version to 0.1.43dad4adRemove ReDoS vulnerability in the Sec-WebSocket-Extensions header parser4a76c75Add Node versions 13 and 14 on Travis44a677aFormatting change: {...} should have spaces inside the bracesf6c50abLet npm reformat package.json2d211f3Change markdown formatting of docs.0b62083Update Travis target versions.729a465Switch license to Apache 2.0.You can trigger a rebase of this PR by commenting
@dependabot rebase.Dependabot commands and options
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