CVE-2024-20470
Cisco Rv340 Dual Wan Gigabit Vpn Router Firmware 1.0.00.29 … 1.0.03.29
Raw vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2024-20470 is a high-severity Improper Neutralization of Expression/Command Delimiters (CWE-146) vulnerability in Cisco Rv340 Dual Wan Gigabit Vpn Router Firmware. Its CVSS base score is 7.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked at the 48th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) — see the control section below for these in your framework.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-18185
Vulnerability Data
A vulnerability in the web-based management interface of Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an authenticated, remote attacker to execute arbitrary code on an affected device. In order to exploit this…
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vulnerability, the attacker must have valid admin credentials. This vulnerability exists because the web-based management interface does not sufficiently validate user-supplied input. An attacker could exploit this vulnerability by sending crafted HTTP input to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Input validation directly stops unneutralized expression/command delimiters from reaching downstream components.
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.
Secure SDLC practices directly require input neutralization to prevent delimiter/command injection.
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.8.25 mandates secure SDLC practices including secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training that reach improper neutralization of delimiters, but leaves a bounded remainder (e.g. inconsistent application across outsourced development, incomplete coverage of all languages/environments, or post-SDLC changes).
A.8.26 explicitly calls out the need to identify and address requirements for resilience against SQL injections and similar attacks (item d), plus input validation (j) and related controls, which when specified and met stop exploitation of command/expression delimiter issues; this covers only the requirements-identification slice of CWE-146, not the actual implementation or completeness of neutralization in code.
Secure architecture principles reduce attack surface but do not prescribe delimiter neutralization.
Secure coding standards require proper neutralization of special elements, directly eliminating this weakness.
Security testing can detect the weakness but does not prevent it by itself.