CVE-2021-41816

Severity CVSS v4.0:

Pending analysis

Type:

CWE-190 Integer Overflow or Wraparound

Publication date:

06/02/2022

Last modified:

24/01/2024

Description

CGI.escape_html in Ruby before 2.7.5 and 3.x before 3.0.3 has an integer overflow and resultant buffer overflow via a long string on platforms (such as Windows) where size_t and long have different numbers of bytes. This also affects the CGI gem before 0.3.1 for Ruby.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

7.50

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:ruby-lang:cgi::::::ruby::*		0.3.1 (excluding)
cpe:2.3:a:ruby-lang:ruby::::::::	3.0.0 (including)	3.0.3 (excluding)
cpe:2.3:a:ruby-lang:cgi::::::ruby::*		0.2.0 (including)
cpe:2.3:a:ruby-lang:ruby::::::::	2.7.0 (including)	2.7.5 (excluding)
cpe:2.3:a:ruby-lang:cgi::::::ruby::*		0.1.0 (including)
cpe:2.3:o:fedoraproject:fedora:34:::::::*
cpe:2.3:o:fedoraproject:fedora:35:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-41816

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools