PT-2021-2794 · Cisco · Cisco Ftd

Ilkin Gasimov · Published 2021-04-28 · Updated 2023-06-30 · CVE-2021-1256

Positive Technologies (AI Summary)

CVSS v2.0

6.2

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco Firepower Threat Defense (FTD) Software (affected versions not specified)

Description A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite files on the file system of an affected device by using directory traversal techniques. This vulnerability is due to insufficient validation of user input for the file path in a specific CLI command. A successful exploit could cause system instability if important system files are overwritten. An attacker could exploit this vulnerability by logging in to a targeted device and issuing a specific CLI command with crafted user input, such as file path, allowing the attacker to overwrite arbitrary files on the file system of the affected device.

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

Files Accessible to External Parties

Path traversal

Weakness Enumeration

CWE-552

CWE-22

Related Identifiers

BDU:2021-02337

CVE-2021-1256

Affected Products

Cisco Ftd

References · 9

• https://bdu.fstec.ru/vul/2021-02337 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-overwrite-XknRjGdB · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1256 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1256 · Vendor Advisory
• https://t.me/cvenotify/34010 · Telegram Post
• https://kc.mcafee.com/corporate/index?page=content&id=SB10382 · Note
• https://t.me/cvenotify/13950 · Telegram Post
• https://t.me/cvenotify/13949 · Telegram Post
• https://t.me/cvenotify/28814 · Telegram Post