PT-2021-4923 · Cisco · Cisco Firepower Management Center

Brandon Sakai · Published 2021-10-27 · Updated 2021-11-03 · CVE-2021-34762

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Firepower Management Center (FMC) Software (affected versions not specified)

Description A vulnerability in the web-based management interface could allow an authenticated, remote attacker to perform a directory traversal attack on an affected device. The attacker would require valid device credentials. The issue is due to insufficient input validation of the HTTPS URL by the web-based management interface. An attacker could exploit this 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Path traversal

Weakness Enumeration

CWE-26

CWE-22

Related Identifiers

BDU:2021-05661

CVE-2021-34762

Affected Products

Cisco Firepower Management Center

References · 7

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-dir-traversal-95UyW5tk · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-34762 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05661 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34762 · Security Note
• https://t.me/cibsecurity/31311 · Telegram Post
• https://t.me/cvenotify/22518 · Telegram Post
• https://t.me/cvenotify/22516 · Telegram Post