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CVE-2016-0752

Rails — Ruby on Rails Directory Traversal Vulnerability

Rails · CWE-22 — Path traversal · in CISA KEV since 2022-03-25

KEV since 2022 · listed over a yearCISA KEVActively Exploited
83

EVRS 83 of 100 Urgent

Patch This Cycle

Rank 508 of 2,960 tracked

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Why it scores 83

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.955.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

  • actionview4.1.14.14.2.5.1update to this version or later in your release line
  • actionpack4.1.14.14.2.5.13.2.22.1update to this version or later in your release line

Affected versions

  • actionview (rubygems)affected >= 4.0.0, <= 4.1.14.0, fixed in 4.1.14.1affected >= 4.2.0, <= 4.2.5.0, fixed in 4.2.5.1
  • actionpack (rubygems)affected >= 4.0.0, <= 4.1.14.0, fixed in 4.1.14.1affected >= 4.2.0, <= 4.2.5.0, fixed in 4.2.5.1affected < 3.2.22.1, fixed in 3.2.22.1

Remediation

Apply updates per vendor instructions.

Fixed versions from NVD and GitHub. Affected packages also in GitHub Advisory GHSA-xrr4-p6fq-hjg7 (CC BY 4.0).

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 7.5 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.955 (99.87th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2022-04-15 · KEV since 2022 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 7.5 (v3.1), assigned by redhat. Listed ENISA EUVD

Description

NVD

Directory 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, and 5.x before 5.0.0.beta1.1 allows remote attackers to read arbitrary files by leveraging an application's unrestricted use of the render method and providing a .. (dot dot) in a pathname.

What CISA says to do

Public module

Metasploit lists a public excellent-rank module for this CVE: Ruby on Rails Dynamic Render File Upload Remote Code Execution (multi/http/rails_dynamic_render_code_exec). A module existing is not the same as active exploitation; see metasploit.com.