Sunday, December 19, 2021

CVE-2021-43838

Description

jsx-slack is a library for building JSON objects for Slack Block Kit surfaces from JSX. In versions prior to 4.5.1 users are vulnerable to a regular expression denial-of-service (ReDoS) attack. If attacker can put a lot of JSX elements into `
` tag, an internal regular expression for escaping characters may consume an excessive amount of computing resources. jsx-slack v4.5.1 has patched to a regex for escaping blockquote characters. Users are advised to upgrade as soon as possible.

References to Advisories, Solutions, and Tools


References to Advisories, Solutions, and Tools

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Resourcehttps://github.com/yhatt/jsx-slack/commit/36e4a10405e4c7745333e245fcc5029c02c7065dhttps://github.com/yhatt/jsx-slack/security/advisories/GHSA-55xv-f85c-248q
 

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thank you Templateism for the design - You should have written the code a little more complicated - Nothing Encrypted anymore