high
8.1
CWE
22 26 20
Advisory Published
Updated

CVE-2021-34762: Cisco Firepower Management Center Software Authenticated Directory Traversal Vulnerability

First published: Wed Oct 27 2021(Updated: )

A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to perform a directory traversal attack on an affected device. The attacker would require valid device credentials. The vulnerability is due to insufficient input validation of the HTTPS URL by the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTPS request that contains directory traversal character sequences to an affected device. A successful exploit could allow the attacker to read or write arbitrary files on the device.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Firepower Management Center Virtual Appliance=6.2.3
Cisco Firepower Management Center Virtual Appliance=6.4.0
Cisco Firepower Management Center Virtual Appliance=6.5.0
Cisco Firepower Management Center Virtual Appliance=6.6.1
Cisco Firepower Management Center Virtual Appliance=6.6.2
Cisco Firepower Management Center Virtual Appliance=6.6.3
Cisco Firepower Management Center Virtual Appliance=6.6.4
Cisco Firepower Management Center Virtual Appliance=6.7.0
Cisco Firepower Management Center Virtual Appliance=7.0.0
Cisco Firepower Management Center Virtual Appliance=7.1.0
Cisco Firepower Threat Defense<6.4.0.13
Cisco Firepower Threat Defense>=6.5.0<6.6.5
Cisco Firepower Threat Defense>=6.7.0<6.7.0.3
Cisco Firepower Threat Defense>=7.0.0<7.0.1
Cisco Sourcefire Defense Center=6.2.3
Cisco Sourcefire Defense Center=6.4.0
Cisco Sourcefire Defense Center=6.5.0
Cisco Sourcefire Defense Center=6.6.1
Cisco Sourcefire Defense Center=6.6.2
Cisco Sourcefire Defense Center=6.6.3
Cisco Sourcefire Defense Center=6.6.4
Cisco Sourcefire Defense Center=7.0.0

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this Cisco Firepower Management Center vulnerability?

    The vulnerability ID for this Cisco Firepower Management Center vulnerability is CVE-2021-34762.

  • What is the severity of CVE-2021-34762?

    The severity of CVE-2021-34762 is high with a CVSS score of 8.1.

  • How does CVE-2021-34762 affect Cisco Firepower Management Center Virtual Appliance?

    CVE-2021-34762 affects Cisco Firepower Management Center Virtual Appliance versions 6.2.3 to 7.1.0.

  • How does CVE-2021-34762 impact Cisco Firepower Threat Defense?

    CVE-2021-34762 impacts Cisco Firepower Threat Defense versions 6.4.0.13 to 7.0.1.

  • Where can I find more information about CVE-2021-34762?

    You can find more information about CVE-2021-34762 on the Cisco Security Advisory website.

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