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.Dependabot 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.If all status checks pass Dependabot will automatically merge this pull request.
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You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot badge me` will comment on this PR with code to add a "Dependabot enabled" badge to your readme Additionally, you can set the following in the `.dependabot/config.yml` file in this repo: - Update frequency - Automerge options (never/patch/minor, and dev/runtime dependencies) - Out-of-range updates (receive only lockfile updates, if desired) - Security updates (receive only security updates, if desired)