In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 5
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Ruby-Lang Cgi
cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:*
|
— |
0.3.5.1
|
|
Ruby-Lang Cgi
cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:*
|
0.4.0
|
0.4.2
|
|
Ruby-Lang Cgi
cpe:2.3:a:ruby-lang:cgi:0.3.6:*:*:*:*:ruby:*:*
|
— | — |
|
Ruby-Lang Ruby
cpe:2.3:a:ruby-lang:ruby:3.1.0:*:*:*:*:*:*:*
|
— | — |
|
Ruby-Lang Ruby
cpe:2.3:a:ruby-lang:ruby:3.2.0:*:*:*:*:*:*:*
|
— | — |