high
7.5
CWE
119
Advisory Published
Updated

CVE-2019-1892: Cisco Small Business Series Switches Memory Corruption Vulnerability

First published: Sat Jul 06 2019(Updated: )

A vulnerability in the Secure Sockets Layer (SSL) input packet processor of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a memory corruption on an affected device. The vulnerability is due to improper validation of HTTPS packets. An attacker could exploit this vulnerability by sending a malformed HTTPS packet to the management web interface of the affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a denial of service (DoS) condition.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco SF200-24 Firmware<1.4.10.6
Cisco SF200-24P
Cisco SF200-24P Firmware<1.4.10.6
Cisco SF200-24P Firmware
Cisco SF200-48 Firmware<1.4.10.6
Cisco SF200-48 Firmware
Cisco SF200-48P Firmware<1.4.10.6
Cisco SF200-48P Firmware
Cisco SG200-18 Firmware<1.4.10.6
Cisco SG200-18 Firmware
Cisco SG200-26P Firmware<1.4.10.6
Cisco SG200-26P Firmware
Cisco SG200-26 Firmware<1.4.10.6
Cisco SG200-26P Firmware
Cisco SG200-50P Firmware<1.4.10.6
Cisco SG200-50FP
Cisco SG200-50P Firmware<1.4.10.6
Cisco SG200-50P Firmware
Cisco SG300 Series Firmware<1.4.10.6
Cisco SG300-10 Firmware
Cisco SG300-10MP Firmware<1.4.10.6
Cisco SG300-10MP Firmware
Cisco SG300-10MPP Firmware<1.4.10.6
Cisco SG300-10MPP Firmware
Cisco SG300 Series Firmware<1.4.10.6
Cisco SG300-10SFP Firmware
Cisco SG300-10P Firmware<1.4.10.6
Cisco SG300-10P Firmware
Cisco SG300-10PP<1.4.10.6
Cisco SG300-10 Firmware
Cisco SG300 Series Firmware<1.4.10.6
Cisco SG300-20 Firmware
Cisco SG300-28P<1.4.10.6
Cisco SG300-28 Firmware
Cisco SG300-28P Firmware<1.4.10.6
Cisco SG300-28P
Cisco SG300-28PP Firmware<1.4.10.6
Cisco SG300-28PP Firmware
Cisco SG300-28MP<1.4.10.6
Cisco SG300-28MP
Cisco SG300 Series Firmware<1.4.10.6
Cisco SG300-28SFP Firmware
Cisco SG300 Series Firmware<1.4.10.6
Cisco SG300-52P
Cisco SG300-52P Firmware<1.4.10.6
Cisco SG300-52P Firmware
Cisco SG300-52MP Firmware<1.4.10.6
Cisco SG300-52MP Firmware
Cisco SF300-08 Firmware<1.4.10.6
Cisco SF300-08 Firmware
Cisco SF302-08 Firmware<1.4.10.6
Cisco SF302-08 Firmware
Cisco SF302-08<1.4.10.6
Cisco SF302-08
Cisco SF302-08P<1.4.10.6
Cisco SF302-08
Cisco SF302-08<1.4.10.6
Cisco SF302-08
Cisco SF302-08<1.4.10.6
Cisco SF302-08
Cisco SF300-24P Firmware<1.4.10.6
Cisco SF300-24 Firmware
Cisco SF300-24P<1.4.10.6
Cisco SF300-24 Firmware
Cisco SF300-24MP Firmware<1.4.10.6
Cisco SF300-24MP Firmware
Cisco SF300-24P<1.4.10.6
Cisco SF300-24PP Firmware
Cisco SF300-48P Firmware<1.4.10.6
Cisco SF300-48P
Cisco SF300-48P Firmware<1.4.10.6
Cisco SF300-48P Firmware
Cisco SF300-48PP Firmware<1.4.10.6
Cisco SF300-48PP Firmware
Cisco SF500-24<1.4.10.6
Cisco SF500-24MP
Cisco SF500-24P<1.4.10.6
Cisco SF500-24P Firmware
Cisco 500 Series Switch Firmware<1.4.10.6
Cisco SF500-24MP Firmware
Cisco SF500-48P Firmware<1.4.10.6
Cisco SF500-48 Firmware
Cisco 500 Series Switch Firmware<1.4.10.6
Cisco SF500-48 Firmware
Cisco 500 Series Switch Firmware<1.4.10.6
Cisco SF500-48MP Firmware
Cisco SG500-28<1.4.10.6
Cisco SG500-28PP Firmware
Cisco SG500-28P<1.4.10.6
Cisco SG500-28P
Cisco SG500-28PP Firmware<1.4.10.6
Cisco SG500-28MPP Firmware
Cisco SG500-52P<1.4.10.6
Cisco SG500-52 Firmware
Cisco SG500-52P<1.4.10.6
Cisco SG500-52P
Cisco SG500-52MP<1.4.10.6
Cisco SG500-52
Cisco SG500X-24<1.4.10.6
Cisco SG500X-24P
Cisco SG500X-24MPP Firmware<1.4.10.6
Cisco SG500X-24MPP
Cisco SG500X-48<1.4.10.6
Cisco SG500X-48MP Firmware
Cisco SG500X-48P<1.4.10.6
Cisco SG500X-48P
Cisco SG500X-48MP Firmware<1.4.10.6
Cisco SG500X-48
Cisco SG500XG-8F8T Firmware<1.4.10.6
Cisco SG500XG-8F8T
Cisco ESW2-350G-52DC<1.4.10.6
Cisco ESW2-350G-52DC
Cisco ESW2-550X-48DC Firmware<1.4.10.6
Cisco ESW2-550X-48DC

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-1892?

    CVE-2019-1892 has been rated as high severity due to the potential for an unauthenticated remote attacker to exploit the vulnerability.

  • How do I fix CVE-2019-1892?

    To fix CVE-2019-1892, you should upgrade your Cisco Small Business Managed Switch firmware to version 1.4.10.6 or later.

  • Which devices are affected by CVE-2019-1892?

    CVE-2019-1892 affects Cisco Small Business 200, 300, and 500 Series Managed Switches running specific firmware versions.

  • What type of attack can exploit CVE-2019-1892?

    An unauthenticated remote attacker can exploit CVE-2019-1892 to cause memory corruption on the affected devices.

  • When was CVE-2019-1892 reported?

    CVE-2019-1892 was reported on July 3, 2019.

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