medium4.4
CVE-2016-1000236
cookie-signature Timing Attack
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | cookie-signature | < 1.0.4 | 1.0.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cookie-Signature Project | Cookie-Signature | before 1.0.6 |
| Debian | Debian Linux | Versions 8.0, 9.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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://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%40lists.alioth.debian.org/msg06583.html
- https://github.com/advisories/GHSA-92vm-wfm5-mxvv
- 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/4cc5e21e7f59a4ea0b51cd5e9634772d48fab590
- https://www.mail-archive.com/secure-testing-team@lists.alioth.debian.org/msg06583.html
- https://github.com/tj/node-cookie-signature/commit/39791081692e9e14aa62855369e1c7f80fbfd50e
- https://www.npmjs.com/advisories/134