CVE-2019-1652
Cisco — Cisco Small Business Routers Improper Input Validation Vulnerability
Cisco · CWE-20 — Improper input validation | CWE-78 — Operating system command injection · in CISA KEV since 2022-03-03
EVRS 83 of 100 Urgent
Patch This Cycle
Rank 505 of 2,960 tracked
Why it scores 83
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.959.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
rv320 firmware: update to 1.4.2.22 or later | rv325 firmware: update to 1.4.2.22 or later
Affected versions
- rv320 firmware
>= 1.4.2.15 < 1.4.2.22 - rv325 firmware
>= 1.4.2.15 < 1.4.2.22 - rv320
- rv325
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.2 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.959 (99.88th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2022-03-17 · KEV since 2022 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.2 (v3.0), assigned by cisco. | Listed | ENISA EUVD |
Description
NVDA vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker with administrative privileges on an affected device to execute arbitrary commands. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious HTTP POST requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux shell as root. Cisco has released firmware updates that address this vulnerability.
What CISA says to do
Public module
Metasploit lists a public normal-rank module for this CVE: Cisco RV320 and RV325 Unauthenticated Remote Code Execution (linux/http/cisco_rv32x_rce). A module existing is not the same as active exploitation; see metasploit.com.