// For flags

CVE-2022-28738

Ruby: Double free in Regexp compilation

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to unexpected memory locations.

Se ha encontrado una doble liberación en el compilador de Regexp en Ruby versiones 3.x anteriores a 3.0.4 y versiones 3.1.x anteriores a 3.1.2. Si una víctima intenta crear un Regexp a partir de una entrada de usuario no confiable, un atacante puede ser capaz de escribir en ubicaciones de memoria no esperadas

A double-free vulnerability was found in Ruby. The issue occurs during Regexp compilation. This flaw allows an attacker to create a Regexp object with a crafted source string that could cause the same memory to be freed twice.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-04-06 CVE Reserved
  • 2022-05-09 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-09-09 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-415: Double Free
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"
 >= 3.0.0 < 3.0.4
Search vendor "Ruby-lang" for product "Ruby" and version " >= 3.0.0 < 3.0.4"
-
Affected
Ruby-lang
Search vendor "Ruby-lang"
 Ruby
Search vendor "Ruby-lang" for product "Ruby"
 >= 3.1.0 < 3.1.2
Search vendor "Ruby-lang" for product "Ruby" and version " >= 3.1.0 < 3.1.2"
-
Affected