// For flags

CVE-2011-4815

ruby: hash table collisions CPU usage DoS (oCERT-2011-003)

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Ruby (aka CRuby) before 1.8.7-p357 computes hash values without 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.

Ruby (también conocido como CRuby) anterior a v1.8.7-P357 calcula los valores de hash sin restringir la capacidad de desencadenar colisiones hash predecible, que permite a atacantes dependientes de contexto para causar una denegación de servicio (consumo de CPU) a través de entrada diseñado para una aplicación que mantiene un hash mesa.

Multiple vulnerabilities have been found in Ruby, allowing context-dependent attackers to cause a Denial of Service condition. Versions less than 2.0.0_p598 are affected.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2011-12-14 CVE Reserved
  • 2011-12-30 CVE Published
  • 2024-08-07 CVE Updated
  • 2025-04-26 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Ruby-lang
Search vendor "Ruby-lang"
Ruby
Search vendor "Ruby-lang" for product "Ruby"
<= 1.8.7-p352
Search vendor "Ruby-lang" for product "Ruby" and version " <= 1.8.7-p352"
-
Affected
Ruby-lang
Search vendor "Ruby-lang"
Ruby
Search vendor "Ruby-lang" for product "Ruby"
1.8.7-p299
Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-p299"
-
Affected
Ruby-lang
Search vendor "Ruby-lang"
Ruby
Search vendor "Ruby-lang" for product "Ruby"
1.8.7-p302
Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-p302"
-
Affected
Ruby-lang
Search vendor "Ruby-lang"
Ruby
Search vendor "Ruby-lang" for product "Ruby"
1.8.7-p330
Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-p330"
-
Affected
Ruby-lang
Search vendor "Ruby-lang"
Ruby
Search vendor "Ruby-lang" for product "Ruby"
1.8.7-p334
Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-p334"
-
Affected