CVE-2023-34832 – This CVE describes a buffer overflow vulnerabil... (How to Fix)

Q: What is the severity of CVE-2023-34832?

CVE-2023-34832 has a CVSS score of 9.8 (CRITICAL). This CVE describes a buffer overflow vulnerability in TP-Link Archer AX10(EU) routers. Attackers can exploit this to execute arbitrary code or cause denial of service. Users of TP-Link Archer AX10(EU) routers with firmware version V1.2_230220 are affected.

📋 TL;DR

This CVE describes a buffer overflow vulnerability in TP-Link Archer AX10(EU) routers. Attackers can exploit this to execute arbitrary code or cause denial of service. Users of TP-Link Archer AX10(EU) routers with firmware version V1.2_230220 are affected.

💻 Affected Systems

Products:

TP-Link Archer AX10(EU)

Versions: V1.2_230220

Operating Systems: Embedded router firmware

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects EU variant of Archer AX10 with specific firmware version.

📦 What is this software?

Archer Ax10 Firmware by Tp Link

View all CVEs affecting Archer Ax10 Firmware →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to complete device compromise, network infiltration, and persistent backdoor installation.

🟠

Likely Case

Router crash causing denial of service, potentially requiring physical reset or firmware reflash.

🟢

If Mitigated

Limited impact if network segmentation isolates the router and regular backups exist.

🌐 Internet-Facing: HIGH - Routers are typically internet-facing devices directly accessible to attackers.

🏢 Internal Only: MEDIUM - Internal attackers could exploit if they gain network access.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Public exploit code exists on Packet Storm Security and GitHub gist. Buffer overflow occurs in function FUN_131e8 - 0x132B4.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: http://tp-link.com

Restart Required: Yes

Instructions:

1. Check TP-Link website for firmware updates. 2. Download latest firmware for Archer AX10(EU). 3. Access router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload new firmware file. 6. Wait for automatic restart.

🔧 Temporary Workarounds

Disable remote management

all

Prevents external attackers from accessing vulnerable interface

Access router admin > Security > Remote Management > Disable

Network segmentation

all

Isolate router from critical internal networks

🧯 If You Can't Patch

Replace vulnerable router with updated model
Implement strict firewall rules to limit access to router management interface

🔍 How to Verify

Check if Vulnerable:

Access router admin interface > System Tools > Firmware Upgrade to check current version matches V1.2_230220

Check Version:

Check router web interface or use nmap -sV to identify device version

Verify Fix Applied:

Verify firmware version is newer than V1.2_230220 after update

📡 Detection & Monitoring

Log Indicators:

Router crash logs
Unusual memory access errors
Failed authentication attempts to admin interface

Network Indicators:

Unusual traffic patterns to router management port
Router becoming unresponsive

SIEM Query:

device_vendor:"TP-Link" AND device_model:"Archer AX10" AND event_type:"buffer_overflow" OR "crash"

📊 Metadata

CVE ID: CVE-2023-34832

CVSS v3 Score: 9.8 (CRITICAL)

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

CWE: CWE-120

Published: June 16, 2023

Last Updated: November 21, 2024

🔗 References

http://archer.com Not Applicable
http://packetstormsecurity.com/files/172989/TP-Link-Archer-AX10-EU-_V1.2_230220-Buffer-Overflow.html Exploit,Third Party Advisory,VDB Entry
http://tp-link.com Product
https://gist.github.com/jhacker91/2026e080a42514255e758d64b465d1d5 Exploit,Third Party Advisory
http://archer.com Not Applicable
http://packetstormsecurity.com/files/172989/TP-Link-Archer-AX10-EU-_V1.2_230220-Buffer-Overflow.html Exploit,Third Party Advisory,VDB Entry
http://tp-link.com Product
https://gist.github.com/jhacker91/2026e080a42514255e758d64b465d1d5 Exploit,Third Party Advisory

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