CRLF injection vulnerability in Ruby on Rails before 2.0.5 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP respons

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• rubyonrails rails0.10.0
• rubyonrails rails0.10.1
• rubyonrails rails0.11.0
• rubyonrails rails0.11.1
• rubyonrails rails0.12.0
• rubyonrails rails0.12.1
• rubyonrails rails0.13.0
• rubyonrails rails0.13.1
• rubyonrails rails0.14.1
• rubyonrails rails0.14.2
• rubyonrails rails0.14.3
• rubyonrails rails0.14.4
• rubyonrails rails0.9.1
• rubyonrails rails0.9.2
• rubyonrails rails0.9.3
• rubyonrails rails0.9.4
• rubyonrails rails0.9.4.1
• rubyonrails rails1.0.0
• rubyonrails rails1.1.0
• rubyonrails rails1.1.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2019-5418There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accepKEV
  90Now
• CVE-2016-0752Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, anKEV
  89Now
• CVE-2019-5420A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically gene
  66This week
• CVE-2020-8163The is a code injection vulnerability in versions of Rails prior to 5.0.1 that wouldallow an attacker who controlled the `locals` argument o
  60This week
• CVE-2013-0156active_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, and 3.2.x before 3.2.1
  60This week
• CVE-2013-0333lib/active_support/json/backends/yaml.rb in Ruby on Rails 2.3.x before 2.3.16 and 3.0.x before 3.0.20 does not properly convert JSON data to
  59Plan

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

State-changing requests rely on the session cookie the browser sends automatically; nothing verifies that the request came from the user’s own page.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1app.use(session({ cookie: { httpOnly: true } }));2app.post("/account/address", updateAddress);

1app.use(session({ cookie: { httpOnly: true, sameSite: "lax" } }));2app.post("/account/address", csrfProtection, updateAddress);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.