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Standard
Vulnerability Identifier

CVE-2024-27280

2024-05-14
Severity Assessment
9.8
CRITICAL
CVSS v3.x Score
Clinical Analysis (Description)

A buffer-overread issue was discovered in StringIO 3.0.1, as distributed in Ruby 3.0.x through 3.0.6 and 3.1.x through 3.1.4. The ungetbyte and ungetc methods on a StringIO can read past the end of a string, and a subsequent call to StringIO.gets may return the memory value. 3.0.3 is the main fixed version; however, for Ruby 3.0 users, a fixed version is stringio 3.0.1.1, and for Ruby 3.1 users, a fixed version is stringio 3.0.1.2.

Vector Sequencing

Attack Parameters

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Impact Consequences

Technical Impact

Unchanged
Scope
High
Confidentiality
High
Integrity
High
Availability
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Classification

CWE-CWE-120

Timeline

Time Line

PUBLICATION
14 May 2024
MODIFICATION
04 Nov 2025
FIRST PATCH
21 Jan 2025
Impact Statistics

Key Metrics

CVSS Score
9.8
CRITICAL
Patches
1
Available
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.

⚠️ MAXIMUM PRIORITY - Immediate action required