Rack::Session::Cookie in Rack 1.5.x before 1.5.2, 1.4.x before 1.4.5, 1.3.x before 1.3.10, 1.2.x before 1.2.8, and 1.1.x before 1.1.6 allows remote attackers to guess the session cookie, gain privileges, and execute arbitrary code via a timing attack involving an HMAC comparison function that does not run in constant time.
| Score | Percentile |
|---|---|
| 8.63% | 92.38% |
No CVSS scores in this advisory.
| Type | Value |
|---|---|
| GHSA | GHSA-xc85-32mf-xpv8 ↗ |
| CVE | CVE-2013-0263 ↗ |
Vulnerable version ranges and first patched releases as published by GitHub.
| Ecosystem | Package | Vulnerable range | First patched | Vulnerable functions |
|---|---|---|---|---|
| rubygems | rack | >= 1.5.0, < 1.5.2 | 1.5.2 | — |
| rubygems | rack | >= 1.4.0, < 1.4.5 | 1.4.5 | — |
| rubygems | rack | >= 1.3.0, < 1.3.10 | 1.3.10 | — |
| rubygems | rack | >= 1.2.0, < 1.2.8 | 1.2.8 | — |
| rubygems | rack | >= 1.1.0, < 1.1.6 | 1.1.6 | — |