CVE-2021-41816

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 packages (4)

• Alpine/rubyfrom 0, < 2.7.5-r0
• Debian/ruby2.7from 0, < 2.7.4-1+deb11u1
• Debian/ruby2.7from 0, < 2.7.4-1+deb11u1
• RubyGems/cgi>= 0.3.0, < 0.3.1

CVSS scores

References (18)

• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-41816
• ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2021-41816
• PATCHhttps://github.com/ruby/cgi
• WEBhttps://github.com/ruby/cgi/commit/959ccf0b6a672bcc64aeaa60c6e1f9e728f1e87f
• WEBhttps://github.com/ruby/cgi/commit/ad079c1cb5f58eba1ffac46da79995fcf94a3a6e
• WEBhttps://github.com/ruby/cgi/commit/c6a37a671b556eb06140ea89cc465136b24207a6
• WEBhttps://github.com/ruby/cgi/commit/c728632c1c09d46cfd4ecbff9caaa3651dd1002a
• WEBhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/cgi/CVE-2021-41816.yml
• WEBhttps://groups.google.com/g/ruby-security-ann/c/4MQ568ZG47c
• WEBhttps://hackerone.com/reports/1328463
• WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUXQCH6FRKANCVZO2Q7D2SQX33FP3KWN
• WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UTOJGS5IEFDK3UOO7IY4OTTFGHGLSWZF
• WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/IUXQCH6FRKANCVZO2Q7D2SQX33FP3KWN
• WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/UTOJGS5IEFDK3UOO7IY4OTTFGHGLSWZF
• WEBhttps://security.gentoo.org/glsa/202401-27
• WEBhttps://security.netapp.com/advisory/ntap-20220303-0006
• WEBhttps://security-tracker.debian.org/tracker/CVE-2021-41816
• WEBhttps://www.ruby-lang.org/en/news/2021/11/24/buffer-overrun-in-cgi-escape_html-cve-2021-41816