CVE-2021-41816

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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://hackerone.com/reports/1328463	Permissions Required Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2021-41816	Third Party Advisory
https://www.ruby-lang.org/en/news/2021/11/24/buffer-overrun-in-cgi-escape_html-cve-2021-41816/	Exploit Vendor Advisory
https://security.netapp.com/advisory/ntap-20220303-0006/	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UTOJGS5IEFDK3UOO7IY4OTTFGHGLSWZF/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IUXQCH6FRKANCVZO2Q7D2SQX33FP3KWN/	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:*

Configuration 2 (hide)

AND

cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:*

cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:*

cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*

Configuration 4 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:34:::::::*
	cpe:2.3:o:fedoraproject:fedora:35:::::::*

Information

Published : 2022-02-06 13:15

Updated : 2022-09-09 19:41

NVD link : CVE-2021-41816

Mitre link : CVE-2021-41816

JSON object : View

CWE

CWE-190

Integer Overflow or Wraparound

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Products Affected

ruby-lang

cgi
ruby

fedoraproject

fedora

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