cookie-signature Timing Attack
Affected versions of cookie-signature are vulnerable to timing attacks as a result of using a fail-early comparison instead of a constant-time comparison.
Timing attacks remove the exponential increase in entropy gained from increased secret length, by providing per-character feedback on the correctness of a guess via miniscule timing differences.
Under favorable network conditions, an attacker can exploit this to guess the secret in no more than charset*length guesses, instead of charset^length guesses required were the timing attack not present.
Recommendation
Update to 1.0.4 or later.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | cookie-signature | < 1.0.4 | 1.0.4 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2016-1000236
- https://github.com/tj/node-cookie-signature/commit/2c4df6b6cee540f30876198cd0b5bebf28528c07
- https://github.com/tj/node-cookie-signature/commit/39791081692e9e14aa62855369e1c7f80fbfd50e
- https://github.com/tj/node-cookie-signature/commit/4cc5e21e7f59a4ea0b51cd5e9634772d48fab590
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838618
- https://bugzilla.redhat.com/show_bug.cgi?id=1371409
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000236
- https://github.com/tj/node-cookie-signature
- https://security-tracker.debian.org/tracker/CVE-2016-1000236
- https://travis-ci.com/nodejs/security-wg/builds/76423102
- https://www.mail-archive.com/secure-testing-team@lists.alioth.debian.org/msg06583.html
- https://www.npmjs.com/advisories/134
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-362- Platform
- npm
- Package
cookie-signature- Disclosed
- 06.01.2020
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-92vm-wfm5-mxvv - CC BY 4.0
Vulnerability history: cookie-signature
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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