PT-2020-14844 · Ruby · Field Test

Ankane · Published 2020-08-05 · Updated 2020-08-05 · CVE-2020-16252

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Field Test gem versions 0.2.0 through 0.3.2

Description The Field Test dashboard is vulnerable to cross-site request forgery (CSRF) with non-session based authentication methods. This issue allows an attacker to perform requests on behalf of an authorized user by getting them to visit a malicious website. A single endpoint is affected, which allows for changing the variant assigned to a user. Session-based authentication methods are not affected.

Recommendations For versions 0.2.0 through 0.3.2, upgrade immediately to a newer version that includes the fix, which changes the protect from forgery method to protect from forgery with: :exception to prevent CSRF attacks. As a temporary workaround, consider restricting access to the affected endpoint to minimize the risk of exploitation.

Exploit

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2020-16252

GHSA-W542-CPP9-R3G7

Affected Products

Field Test

References · 7

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/field_test/CVE-2020-16252.yml · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-16252 · Security Note
• https://osv.dev/vulnerability/CVE-2020-16252 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-w542-cpp9-r3g7 · Vendor Advisory
• https://github.com/ankane/field_test/issues/28 · Note
• https://github.com/ankane/field_test · Note
• https://github.com/ankane/field_test/commit/defd3fdf457c22d7dc5b3be7048481947bd5f0d0 · Note