medium
6.1
CWE
601 20
Advisory Published
Updated

CVE-2019-1943: Cisco Small Business Series Switches Open Redirect Vulnerability

First published: Wed Jul 17 2019(Updated: )

A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Switches software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by intercepting a user's HTTP request and modifying it into a request that causes the web interface to redirect the user to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco SG200-50P Firmware
Cisco SG200-50FP
Cisco SG200-50P Firmware
Cisco SG200-50P Firmware
Cisco SG200-50FP Firmware
Cisco SG200-50FP
Cisco SG200-26FP Firmware
Cisco SG200-26P Firmware
Cisco SG200-26P Firmware
Cisco SG200-26P Firmware
Cisco SG200-26FP Firmware
Cisco SG200-26FP Firmware
Cisco SG200-18 Firmware
Cisco SG200-18 Firmware
Cisco SG200-10FP Firmware
Cisco SG200-10FP Firmware
Cisco SG200-08 Firmware
Cisco SG200-08 Firmware
Cisco SG200-08P Firmware
Cisco SG200-08P
Cisco SF200-24 Firmware
Cisco SF200-24P
Cisco SF200-24P Firmware
Cisco SF200-24P
Cisco SF200-24FP Firmware
Cisco SF200-24FP
Cisco SF200-48 Firmware
Cisco SF200-48 Firmware
Cisco SF200-48P Firmware
Cisco SF200-48P Firmware
Cisco SF302-08PP Firmware=1.3.7.18
Cisco SF302-08PP Firmware
Cisco SF302-08MPP Firmware=1.3.7.18
Cisco SF302-08MPP
Cisco SG300-10PP Firmware=1.3.7.18
Cisco SG300-10PP Firmware
Cisco SG300-10MPP Firmware=1.3.7.18
Cisco SG300-10MPP Firmware
Cisco SF300-24PP Firmware=1.3.7.18
Cisco SF300-24PP
Cisco SF300-48PP Firmware=1.3.7.18
Cisco SF300-48PP Firmware
Cisco SG300-28PP Firmware=1.3.7.18
Cisco SG300-28PP
Cisco SF300-08 Firmware=1.3.7.18
Cisco SF300-08 Firmware
Cisco SF300-48P Firmware=1.3.7.18
Cisco SF300-48P Firmware
Cisco SG300-10MP Firmware=1.3.7.18
Cisco SG300-10MP Firmware
Cisco SG300-10P Firmware=1.3.7.18
Cisco SG300-10P
Cisco SG300-10 Firmware=1.3.7.18
Cisco SG300-10
Cisco SG300-28P Firmware=1.3.7.18
Cisco SG300-28P
Cisco SF300-24P=1.3.7.18
Cisco SF300-24P
Cisco SF302-08MP Firmware=1.3.7.18
Cisco SF302-08MP
Cisco SG300-28 Firmware=1.3.7.18
Cisco SG300-28
Cisco SF300-48P Firmware=1.3.7.18
Cisco SF300-48
Cisco SG300-20 Firmware=1.3.7.18
Cisco SG300-20 Firmware
Cisco SF302-08P Firmware=1.3.7.18
Cisco SF302-08P Firmware
Cisco SG300-52 Firmware=1.3.7.18
Cisco SG300-52
Cisco SF300-24P Firmware=1.3.7.18
Cisco SF300-24
Cisco SF302-08 Firmware=1.3.7.18
Cisco SF302-08
Cisco sf300-24mp firmware=1.3.7.18
Cisco SF300-24MP
Cisco SG300-10SFP Firmware=1.3.7.18
Cisco SG300-10SFP Firmware
Cisco SG300-28MP=1.3.7.18
Cisco SG300-28MP
Cisco SG300-52P Firmware=1.3.7.18
Cisco SG300-52P
Cisco SG300-52MP Firmware=1.3.7.18
Cisco SG300-52MP
Cisco SG500-28PP Firmware
Cisco SG500-28MPP Firmware
Cisco SG500-52MP
Cisco SG500-52
Cisco SG500XG-8F8T Firmware
Cisco SG500XG-8F8T Firmware
Cisco SF500-24
Cisco SF500-24MP
Cisco SF500-24P
Cisco SF500-24P Firmware
Cisco SF500-48P Firmware
Cisco SF500-48 Firmware
Cisco SF500-48P Firmware
Cisco SF500-48 Firmware
Cisco SG500-28
Cisco SG500-28PP Firmware
Cisco SG500-28P
Cisco SG500-28P
Cisco SG500-52P
Cisco SG500-52 Firmware
Cisco SG500-52P
Cisco SG500-52P
Cisco SG500X-24
Cisco SG500X-24P
Cisco SG500X-24P
Cisco SG500X-24P
Cisco SG500X-48
Cisco SG500X-48MP Firmware
Cisco SG500X-48P
Cisco SG500X-48P

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-1943?

    The severity of CVE-2019-1943 is classified as Medium due to the potential for remote exploitation without authentication.

  • How do I fix CVE-2019-1943?

    To fix CVE-2019-1943, update the affected Cisco Small Business switch firmware to a version that addresses this vulnerability.

  • Which devices are affected by CVE-2019-1943?

    CVE-2019-1943 affects various models of Cisco Small Business 200, 300, and 500 Series Switches running vulnerable firmware versions.

  • What kind of attack can exploit CVE-2019-1943?

    CVE-2019-1943 can be exploited by an unauthenticated remote attacker to redirect users to malicious web pages.

  • Is there a workaround for CVE-2019-1943 if I cannot apply the patch immediately?

    Currently, there are no specific workarounds for CVE-2019-1943; applying the firmware update is strongly recommended.

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