// For flags

CVE-2023-36617

rubygem-uri: ReDoS vulnerability - upstream's incomplete fix for CVE-2023-28755

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A ReDoS issue was discovered in the URI component before 0.12.2 for Ruby. The URI parser mishandles invalid URLs that have specific characters. There is an increase in execution time for parsing strings to URI objects with rfc2396_parser.rb and rfc3986_parser.rb. NOTE: this issue exists becuse of an incomplete fix for CVE-2023-28755. Version 0.10.3 is also a fixed version.

A flaw was found in the rubygem URI. The URI parser mishandles invalid URLs that have specific characters, which causes an increase in execution time parsing strings to URI objects. This issue may result in a regular expression denial of service (ReDoS).

It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.10 and Ubuntu 20.04 LTS. It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service. This issue exists because of an incomplete fix for CVE-2023-28755.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
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
  • 2023-06-25 CVE Reserved
  • 2023-06-29 CVE Published
  • 2024-08-02 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-185: Incorrect Regular Expression
  • CWE-1333: Inefficient Regular Expression Complexity
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"
 Uri
Search vendor "Ruby-lang" for product "Uri"
 < 0.10.3
Search vendor "Ruby-lang" for product "Uri" and version " < 0.10.3"
ruby
Affected
Ruby-lang
Search vendor "Ruby-lang"
 Uri
Search vendor "Ruby-lang" for product "Uri"
 >= 0.11.0 < 0.12.2
Search vendor "Ruby-lang" for product "Uri" and version " >= 0.11.0 < 0.12.2"
ruby
Affected