CVE-2022-47185 – This vulnerability allows attackers to exploit ... (How to Fix)

Q: What is the severity of CVE-2022-47185?

CVE-2022-47185 has a CVSS score of 7.5 (HIGH). This vulnerability allows attackers to exploit improper input validation in Apache Traffic Server's range header handling. Attackers could cause denial of service or potentially execute arbitrary code by sending specially crafted HTTP requests. All Apache Traffic Server deployments through version 9.2.1 are affected.

📋 TL;DR

This vulnerability allows attackers to exploit improper input validation in Apache Traffic Server's range header handling. Attackers could cause denial of service or potentially execute arbitrary code by sending specially crafted HTTP requests. All Apache Traffic Server deployments through version 9.2.1 are affected.

💻 Affected Systems

Products:

Apache Traffic Server

Versions: through 9.2.1

Operating Systems: All platforms running Apache Traffic Server

Default Config Vulnerable: ⚠️ Yes

Notes: All configurations using the vulnerable versions are affected.

📦 What is this software?

Traffic Server by Apache

View all CVEs affecting Traffic Server →

Traffic Server by Apache

View all CVEs affecting Traffic Server →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to complete system compromise and data exfiltration.

🟠

Likely Case

Denial of service causing service disruption and potential data corruption.

🟢

If Mitigated

Limited impact with proper input validation and network segmentation in place.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires sending specially crafted HTTP requests with malicious range headers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 9.2.2 and later

Vendor Advisory: https://lists.apache.org/thread/jsl6dfdgs1mjjo1mbtyflyjr7xftswhc

Restart Required: Yes

Instructions:

1. Download Apache Traffic Server 9.2.2 or later from the official Apache website. 2. Stop the Traffic Server service. 3. Install the updated version. 4. Restart the Traffic Server service.

🔧 Temporary Workarounds

Input Validation Filter

all

Implement custom input validation for range headers using Traffic Server plugins

Requires custom plugin development - no standard command

WAF Rule

all

Deploy Web Application Firewall rules to block malicious range headers

Depends on specific WAF platform

🧯 If You Can't Patch

Implement strict network segmentation to limit access to Traffic Server instances
Deploy intrusion detection systems to monitor for exploitation attempts

🔍 How to Verify

Check if Vulnerable:

Check the Traffic Server version using 'traffic_server -V' or 'traffic_manager -V'

Check Version:

traffic_server -V

Verify Fix Applied:

Verify version is 9.2.2 or later using 'traffic_server -V'

📡 Detection & Monitoring

Log Indicators:

Unusual range header patterns in access logs
Multiple failed requests with malformed headers
Service restart patterns

Network Indicators:

HTTP requests with unusually formatted range headers
Multiple connection attempts to Traffic Server ports

SIEM Query:

source="traffic_server" AND (http_header="range" AND http_header_value MATCHES "[^0-9,-]" OR http_header_value CONTAINS "..")

📊 Metadata

CVE ID: CVE-2022-47185

CVSS v3 Score: 7.5 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE: CWE-20

Published: August 9, 2023

Last Updated: February 13, 2025

🔗 References

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