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CVE-2021-1256— Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability

Quick assessment

Affected
Cisco Cisco Firepower Threat Defense Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense 存在安全漏洞，该漏洞源于命令行存在漏洞，通过使用目录遍历技术，认证的本地攻击者可利用该漏洞可以覆盖受影响设备文件系统上的文件。

CVSS 6.0 · Medium EPSS 0.50% · P40

Possible ATT&CK Techniques 1 AI

T1553.005 · Mark-of-the-Web Bypass
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I. Basic Information for CVE-2021-1256

Vulnerability Information
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Vulnerability Title
Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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. A successful exploit could cause system instability if important system files are overwritten. This vulnerability is due to insufficient validation of user input for the file path in a specific CLI command. An attacker could exploit this vulnerability by logging in to a targeted device and issuing a specific CLI command with crafted user input. A successful exploit could allow the attacker to overwrite arbitrary files on the file system of the affected device. The attacker would need valid user credentials on the device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对外部实体的文件或目录可访问
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Firepower Threat Defense 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense 存在安全漏洞，该漏洞源于命令行存在漏洞，通过使用目录遍历技术，认证的本地攻击者可利用该漏洞可以覆盖受影响设备文件系统上的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Firepower Threat Defense Software n/a -

II. Public POCs for CVE-2021-1256

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III. Intelligence Information for CVE-2021-1256

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Vendor Advisories for CVE-2021-1256 (1)

Other References for CVE-2021-1256 (1)

Same Patch Batch · Cisco · 2021-04-29 · 17 CVEs total

CVE-2021-1445 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi
CVE-2021-1501 8.6 HIGH Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software SIP
CVE-2021-1504 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi
CVE-2021-1493 8.5 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi
CVE-2021-1476 6.7 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Command I
CVE-2021-1488 6.7 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firep
CVE-2021-1495 5.8 MEDIUM Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability
CVE-2021-1369 5.4 MEDIUM Cisco Firepower Device Manager On-Box Software XML External Entity Vulnerability
CVE-2021-1456 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1457 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1458 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1477 4.3 MEDIUM Cisco Firepower Management Center Software Policy Vulnerability
CVE-2021-1402 Cisco Firepower Threat Defense Software SSL Decryption Policy Denial of Service Vulnerabil
CVE-2021-1448 Cisco Firepower Threat Defense Software Command Injection Vulnerability
CVE-2021-1455 Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities
CVE-2021-1489 Cisco Firepower Device Manager Software Filesystem Space Exhaustion Denial of Service Vuln

IV. Related Vulnerabilities

Same product: Cisco Firepower Threat Defense Software
Same vendor: Cisco
Same weakness: CWE-552

V. Comments for CVE-2021-1256

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