← Back

CVE-2021-41816

nvd nist
Published: Feb 6, 2022Modified: Jun 17, 2026

JSON object

Loading...
9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

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.

Affected (5)

Ruby Lang
1 product
Cgi
Fedoraproject
1 product
Fedora
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Cgi
Before 0.3.1
Configuration B
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Cgi
Up to 0.2.0
Running on/withPlatform Versions
Ruby Lang
Ruby
From 3.0.0 to 3.0.3
Configuration C
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Cgi
Up to 0.1.0
Running on/withPlatform Versions
Ruby Lang
Ruby
From 2.7.0 to 2.7.5
Configuration D
2 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Fedora
Version 34
Fedora
Version 35

Related CWEs

CWE-190
Integer Overflow or Wraparound
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (14)

Source: cve@mitre.org
Permissions RequiredThird Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
ExploitVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Permissions RequiredThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitVendor Advisory

Timeline

No history available yet.