Cisco Small Business Routers Improper Input Validation Vulnerability

Exploited · KEV 2022-03-03Metasploit moduleCVE-2019-1652CWE-20

Exploited since 2022-03-03. No WAF vendor names it yet.

Edge rules

0/8

Our test

No exploit yet

CVSS

7.2

EPSS

95.9% Top 0.1%

Posts, 14d

Published

2019-01-24

A 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.

Edge coverage

Claimed by vendors

CloudflareBefore feed historyOlder than its feed AWSBefore feed historyOlder than its feed Microsoft AzureNo public claimNot named Google CloudBefore feed historyOlder than its feed FastlyBefore feed historyOlder than its feed F5Before feed historyOlder than its feed AkamaiNo public sourceNo public changelog OWASP CRSBefore feed historyOlder than its feed

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Ask about CVE-2019-1652: who's covered, what to patch first, how vendors compare. I cite sources and won't help with attacks.

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Severity, decoded

CVSS 3.0

7.2High

High · 7.2 / 10

Exploitable over the network, with high privileges and no user interaction, leading to full loss of confidentiality, integrity and availability.

Over the internetAdmin login neededNo user actionWorks reliablyFull compromise

How the score is built8 metrics

Attack vectorAn attacker can reach it over the internet; no access to your network needed.
Network
Attack complexityNo special conditions are needed; the attack works reliably.
Low
Privileges requiredThe attacker needs an administrator-level account.
High
User interactionNo one has to click or open anything; the attack works on its own.
None
ScopeThe damage stays within the vulnerable component.
Unchanged
Confidentiality impactAn attacker can read all data the affected component holds, or the most sensitive parts of it.
High
Integrity impactAn attacker can change any data or files the affected component protects.
High
Availability impactAn attacker can take the component down completely or keep it from serving anyone.
High

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA's assessmentSSVC, from the CVE record

ExploitationActive

Attackers are exploiting this in the wild.

AutomatableNo

At least one step needs hands-on work, which slows mass attacks.

Technical impactTotal

A successful attack gives full control over the affected software or all of its data.

Public exploits

3 found

1 Metasploit2 Exploit-DB0 Scanner template0 GitHub PoCs

MetasploitCisco RV320 and RV325 Unauthenticated Remote Code Execution2018-09-09 · exploit · rank Normal · has check
Exploit-DBCisco RV320 and RV325 - Unauthenticated Remote Code Execution (Metasploit)2019-04-03 · remote · hardware · verified
Exploit-DBCisco RV320 Dual Gigabit WAN VPN Router 1.4.2.15 - Command Injection2019-01-25 · webapps · hardware · verified

Links are to third-party code: never run it outside an isolated lab.

Timeline

2018-09-09
Metasploit module published
Cisco RV320 and RV325 Unauthenticated Remote Code Execution
2019-01-24
CVE published
CVE List
2019-01-25
Exploit published on Exploit-DB
Cisco RV320 Dual Gigabit WAN VPN Router 1.4.2.15 - Command Injection
2022-03-03
Added to CISA KEV
Confirmed exploitation in the wild