Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.
CVE-2012-5371 is a security vulnerability that . Impacting 1 product from ruby-lang organizations running these solutions should prioritize assessment and patching.
Documented in 2012, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.
2012-11-28T13:03:10.153
2025-04-11T00:51:21.963
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | ruby-lang | ruby | ≤ 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9 | Yes |
| Application | ruby-lang | ruby | 1.9.1 | Yes |
| Application | ruby-lang | ruby | 1.9.2 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 2.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For ruby-lang's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.