Full Report
Cisco Talos' Vulnerability Research team recently discovered five Nvidia out-of-bounds access vulnerabilities in shader processing, as well as eleven LevelOne router vulnerabilities spanning a range of possible exploits.For Snort coverage that can detect the exploitation of these vulnerabilities, download the latest rule sets from Snort.org, and our
Analysis Summary
# Vulnerability: NVIDIA Graphics Out-of-Bounds Access and LevelOne Router Multiple Flaws
This report summarizes vulnerabilities discovered in NVIDIA Graphics drivers and LevelOne Wireless SOHO Routers.
## CVE Details
Since the article lists multiple CVEs without specific severity scores, these are summarized by category where known.
**NVIDIA Graphics Vulnerabilities (Out-of-Bounds Access in Shader Processing):**
- CVE ID: CVE-2024-0121, CVE-2024-0117, CVE-2024-0118, CVE-2024-0120, CVE-2024-0119 (Specific scores not provided, but described as leading to sensitive information disclosure and memory corruption.)
**LevelOne Router Vulnerabilities (Total of 11):**
- CVE ID: CVE-2024-28875, CVE-2024-31151 (Hard-coded credentials)
- CVE ID: CVE-2024-24777 (CSRF)
- CVE ID: CVE-2024-31152 (Improper Resource Allocation/Reboot)
- CVE ID: CVE-2024-32946 (Cleartext Transmission)
- CVE ID: CVE-2024-33699 (Weak Authentication)
- CVE ID: CVE-2024-33603 (Information Disclosure - Log/Session Hijacking potential)
- CVE ID: CVE-2024-33626 (Information Disclosure - Wi-Fi WPS PIN)
- CVE ID: CVE-2024-23309 (Authentication Bypass via IP Spoofing)
- CVE ID: CVE-2024-28052 (Buffer Overflow via HTTP POST)
- CVE ID: CVE-2024-33700 (Improper Input Validation/DoS via FTP)
- CVE ID: CVE-2024-33623 (DoS via HTTP POST)
- CWE: Multiple types, including CWE-120 (Buffer Copy without Checking Size of Input), CWE-307 (Improper Restriction of Password Length), CWE-200 (Exposure of Sensitive Information), CWE-384 (Authentication Bypass), CWE-79 (Cross-site Scripting - implied via CSRF context).
## Affected Systems
- **Products (NVIDIA):** NVIDIA Graphics GPU drivers (Triggerable in virtualized environments, especially where RemoteFX is used).
- **Products (LevelOne):** LevelOne WBR-6012 SOHO router.
- **Versions (LevelOne):** R0.30e6.
- **Configurations (NVIDIA):** Triggerable remotely in virtualized environments, potentially via web browser interaction.
## Vulnerability Description
**NVIDIA Graphics:** Multiple out-of-bounds read vulnerabilities exist in the shader processing component of NVIDIA Graphics drivers. Successful exploitation could lead to the disclosure of sensitive information and subsequent memory corruption. These are noted to be triggerable remotely in virtualized settings, potentially using RemoteFX technology.
**LevelOne Router (WBR-6012 R0.30e6):** A complex set of issues exist, including:
1. **Hard-coded Credentials:** Default and undocumented user accounts allow unauthorized access, particularly within 30 seconds after boot.
2. **Web Application Flaws:** CSRF, weak password change mechanisms, and authentication bypass based on client IP address spoofing.
3. **Information Disclosure:** Sensitive data (system logs, IP addresses, Wi-Fi WPS PIN) is exposed via unauthenticated access to hidden pages or cleartext transmission over FTP/HTTP.
4. **Denial of Service (DoS):** Caused by resource exhaustion or malformed commands (FTP/HTTP POST requests), potentially leading to a device reboot and access to a backdoor account.
5. **Buffer Overflow:** Triggerable via overly long HTTP POST URIs.
## Exploitation
- **Status (NVIDIA):** Not explicitly stated as exploited in the wild; discovery implies potential for remote exploitation.
- **Status (LevelOne):** Attack vectors described suggest high potential for exploitation, especially for access/DoS conditions. Some flaws (credentials) rely on short windows or specific actions (reboot).
- **Complexity (General):** Varies (e.g., IP spoofing vs. simple credential access). NVIDIA flaws typically require medium to high complexity based on environment setup.
- **Attack Vector (NVIDIA):** Network (via remote means in virtualized environment/browser).
- **Attack Vector (LevelOne):** Network (Requires web access for most flaws; hardcoded credentials require proximity to the initial boot state).
## Impact
**NVIDIA Graphics (Out-of-Bounds Read):**
- Confidentiality: High (Disclosure of sensitive memory contents).
- Integrity: High (Potential for further memory corruption/arbitrary code execution implied by OOB read).
- Availability: Medium (Memory corruption can lead to crashes).
**LevelOne Router (General):**
- Confidentiality: High (Exposure of Wi-Fi credentials, system logs, session data).
- Integrity: High (Ability to change admin passwords, gain unauthorized access, execute DoS).
- Availability: High (Multiple DoS vectors leading to service interruption/reboot).
## Remediation
### Patches
The article does not explicitly list patch versions, but references Talos advisories which contain necessary fix information. Users must consult the specific advisories linked below.
### Workarounds
- **NVIDIA:** Ensure RemoteFX is deprecated or disabled if possible on older systems. Isolate and monitor virtualized endpoints utilizing NVIDIA hardware.
- **LevelOne:** Immediately change all default credentials post-boot. Restrict network access to the router administration interface (e.g., via firewall rules) to trusted IPs only to mitigate CSRF and IP spoofing.
## Detection
- **Indicators of Compromise (IoCs):** Suspicious outbound network activity from virtualized environments indicating data exfiltration (NVIDIA). Unexpected device reboots on the WBR-6012 router, failed login attempts, or unusual HTTP POST requests with excessively long URIs (LevelOne).
- **Detection Methods and Tools:** Download the latest Snort rule sets from snort dot org for known detection signatures related to these vulnerabilities. Monitor network traffic for unusual HTTP POST requests or FTP access attempts targeting the router management ports.
## References
- Vendor Advisories (NVIDIA/LevelOne): Consult the following advisories on the Talos Intelligence website:
- TALOS-2024-1955
- TALOS-2024-2012
- TALOS-2024-2013
- TALOS-2024-2014
- TALOS-2024-2015
- TALOS-2024-1979
- TALOS-2024-1981
- TALOS-2024-1982
- TALOS-2024-1983
- TALOS-2024-1984
- TALOS-2024-1985
- TALOS-2024-1986
- TALOS-2024-1996
- TALOS-2024-1997
- TALOS-2024-1998
- TALOS-2024-2001
- Relevant links: snort dot org (for rule updates), talosintelligence dot com/vulnerability_reports (for full advisories).