Home / CVE DB / CVE-2024-56406
Standard
Vulnerability Identifier

CVE-2024-56406

2025-04-13
Severity Assessment
8.4
HIGH
CVSS v3.x Score
Clinical Analysis (Description)

A heap buffer overflow vulnerability was discovered in Perl.

Release branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10.

When there are non-ASCII bytes in the left-hand-side of the `tr` operator, `S_do_trans_invmap` can overflow the destination pointer `d`.

   $ perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/;'
   Segmentation fault (core dumped)

It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.

Vector Sequencing

Attack Parameters

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

Technical Impact

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

CWE-CWE-122

Affected Population

Affected Configurations

Total: 69 detected entries

Software List Scrollable
pe
perl
Vendor: perl • v5.37.0
pe
perl
Vendor: perl • v5.34.2
pe
perl
Vendor: perl • v5.33.8
pe
perl
Vendor: perl • v5.37.6
pe
perl
Vendor: perl • v5.39.8
pe
perl
Vendor: perl • v5.35.3
pe
perl
Vendor: perl • v5.33.4
pe
perl
Vendor: perl • v5.38.3
pe
perl
Vendor: perl • v5.37.9
pe
perl
Vendor: perl • v5.39.6
pe
perl
Vendor: perl • v5.41.6
pe
perl
Vendor: perl • v5.41.9
pe
perl
Vendor: perl • v5.38.1
pe
perl
Vendor: perl • v5.37.11
pe
perl
Vendor: perl • v5.39.1
pe
perl
Vendor: perl • v5.37.10
pe
perl
Vendor: perl • v5.34.1
pe
perl
Vendor: perl • v5.35.8
pe
perl
Vendor: perl • v5.35.9
pe
perl
Vendor: perl • v5.33.2
pe
perl
Vendor: perl • v5.41.4
pe
perl
Vendor: perl • v5.39.4
pe
perl
Vendor: perl • v5.35.4
pe
perl
Vendor: perl • v5.35.0
pe
perl
Vendor: perl • v5.41.8
pe
perl
Vendor: perl • v5.38.0
pe
perl
Vendor: perl • v5.41.7
pe
perl
Vendor: perl • v5.41.0
pe
perl
Vendor: perl • v5.35.5
pe
perl
Vendor: perl • v5.37.2
pe
perl
Vendor: perl • v5.34.3
pe
perl
Vendor: perl • v5.39.0
pe
perl
Vendor: perl • v5.34.0
pe
perl
Vendor: perl • v5.37.7
pe
perl
Vendor: perl • v5.41.3
pe
perl
Vendor: perl • v5.38.2
pe
perl
Vendor: perl • v5.41.5
pe
perl
Vendor: perl • v5.33.7
pe
perl
Vendor: perl • v5.41.10
pe
perl
Vendor: perl • v5.37.3
pe
perl
Vendor: perl • v5.35.1
pe
perl
Vendor: perl • v5.33.1
pe
perl
Vendor: perl • v5.39.2
pe
perl
Vendor: perl • v5.36.3
pe
perl
Vendor: perl • v5.37.4
pe
perl
Vendor: perl • v5.36.0
pe
perl
Vendor: perl • v5.33.9
pe
perl
Vendor: perl • v5.37.8
pe
perl
Vendor: perl • v5.37.1
pe
perl
Vendor: perl • v5.33.3
pe
perl
Vendor: perl • v5.39.5
pe
perl
Vendor: perl • v5.33.5
pe
perl
Vendor: perl • v5.33.6
pe
perl
Vendor: perl • v5.40.1
pe
perl
Vendor: perl • v5.36.2
pe
perl
Vendor: perl • v5.40.0
pe
perl
Vendor: perl • v5.35.10
pe
perl
Vendor: perl • v5.35.6
pe
perl
Vendor: perl • v5.37.5
pe
perl
Vendor: perl • v5.36.1
pe
perl
Vendor: perl • v5.39.10
pe
perl
Vendor: perl • v5.35.2
pe
perl
Vendor: perl • v5.35.11
pe
perl
Vendor: perl • v5.39.3
pe
perl
Vendor: perl • v5.39.7
pe
perl
Vendor: perl • v5.39.9
pe
perl
Vendor: perl • v5.41.1
pe
perl
Vendor: perl • v5.41.2
pe
perl
Vendor: perl • v5.35.7
Timeline

Time Line

PUBLICATION
13 Apr 2025
MODIFICATION
16 Oct 2025
FIRST PATCH
21 Apr 2026
Impact Statistics

Key Metrics

CVSS Score
8.4
HIGH
Products
69
Affected
Patches
5
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.