Cyber Resilience

CVE-2024-46451

Memory Safety in Totolink T8 Firmware 4.1.5cu.861_b20230220

Public PoCMemory Safety
Published
16 September 2024
Modified
17 September 2024
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.012 67th percentile
Risk Priority 82 floored blend · peak EPSS

Summary

CVE-2024-46451 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Totolink T8 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 33% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The vulnerability CVE-2024-46451 is a buffer overflow (CWE-120) in the TOTOLINK AC1200 T8 router firmware version v4.1.5cu.861_B20230220. It resides in the setWiFiAclRules function and is triggered via the desc parameter, resulting in a CVSS 3.1 score of 9.8 that reflects unauthenticated network access with full impacts on confidentiality, integrity, and availability.

An unauthenticated remote attacker can send a crafted request to the affected function over the network to trigger the overflow, enabling arbitrary code execution or denial of service that fully compromises the device. The current and peak EPSS score of 0.1619 indicates moderate and stable exploitation interest since disclosure.

A technical write-up with reproduction details is published at the referenced GitHub repository, but no vendor advisory, firmware patch, or mitigation steps are documented in the available references.

EU & UK References

Vulnerability Data

TOTOLINK AC1200 T8 v4.1.5cu.861_B20230220 has a buffer overflow vulnerability in the setWiFiAclRules function via the desc parameter.

CWE(s)
CWE-120

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-46419Same product: Totolink T8
CVE-2024-8078Same product: Totolink T8
CVE-2024-8579Same product: Totolink T8
CVE-2024-8578Same product: Totolink T8
CVE-2024-8076Same product: Totolink T8
CVE-2024-8575Same product: Totolink T8
CVE-2024-8079Same product: Totolink T8
CVE-2024-46424Same product: Totolink T8
CVE-2024-8576Same product: Totolink T8
CVE-2024-8577Same product: Totolink T8

Affected Assets

totolink
t8 firmware
4.1.5cu.861_b20230220

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.2.1

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and analysis can find missing size checks before deployment.

SI-10 Information Input Validation good match

Input validation directly enforces size checks before buffer copies.

SA-8 Security and Privacy Engineering Principles partial match

Engineering principles require bounds checking and safe buffer handling in design.

SI-16 Memory Protection partial match

Memory protection limits the impact of an overflow once it occurs.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure development practices directly enforce bounds checking and input validation that prevent classic buffer overflows.

ID.RA-01 partial match
prevents

Vulnerability identification processes such as code review or scanning detect classic buffer overflows before exploitation.

PR.PS-02 partial match
prevents

Routine patching replaces vulnerable code containing unchecked buffer copies with corrected versions.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding mostly match
prevents

Secure coding directly requires bounds-checked memory operations, addressing the root cause of CWE-120.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance can detect buffer overflows through fuzzing and static analysis, though it does not prevent them at the source.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates processes that can include input validation and bounds checking to prevent buffer overflows.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify input-size validation and safe buffer handling to mitigate classic buffer overflows.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure system architecture and engineering principles promote defensive coding patterns that reduce the likelihood of unchecked buffer copies.

References