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[email protected]CVE-2021-34761

HistoryOct 27, 2021 - 7:15 p.m.

CVE-2021-34761

2021-10-2719:15:08

CWE-668

CWE-73

[email protected]

web.nvd.nist.gov

vulnerability

cisco

firepower

threat defense

ftd software

authenticated

local attacker

overwrite

append

arbitrary data

system files

root-level privileges

administrative credentials

6.6 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

6.1 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.

Affected configurations

NVD

Node

ciscofirepower_management_center_virtual_applianceMatch6.2.3

ciscofirepower_management_center_virtual_applianceMatch6.4.0

ciscofirepower_management_center_virtual_applianceMatch6.6.1

ciscofirepower_management_center_virtual_applianceMatch6.7.0

ciscofirepower_management_center_virtual_applianceMatch7.0.0

ciscofirepower_management_center_virtual_applianceMatch7.1.0

ciscofirepower_threat_defenseRange6.4.0–6.4.0.13

ciscofirepower_threat_defenseRange6.6.0–6.6.5

ciscofirepower_threat_defenseRange6.7.0–6.7.0.3

ciscofirepower_threat_defenseRange7.0.0–7.0.1

ciscosourcefire_defense_centerMatch6.2.3

ciscosourcefire_defense_centerMatch6.4.0

ciscosourcefire_defense_centerMatch6.6.1

ciscosourcefire_defense_centerMatch6.7.0

ciscosourcefire_defense_centerMatch7.0.0

ciscosourcefire_defense_centerMatch7.1.0

CPENameOperatorVersion
cisco:firepower_management_center_virtual_appliancecisco firepower management center virtual applianceeq6.2.3
cisco:firepower_management_center_virtual_appliancecisco firepower management center virtual applianceeq6.4.0
cisco:firepower_management_center_virtual_appliancecisco firepower management center virtual applianceeq6.6.1
cisco:firepower_management_center_virtual_appliancecisco firepower management center virtual applianceeq6.7.0
cisco:firepower_management_center_virtual_appliancecisco firepower management center virtual applianceeq7.0.0
cisco:firepower_management_center_virtual_appliancecisco firepower management center virtual applianceeq7.1.0
cisco:firepower_threat_defensecisco firepower threat defenselt6.4.0.13
cisco:firepower_threat_defensecisco firepower threat defenselt6.6.5
cisco:firepower_threat_defensecisco firepower threat defenselt6.7.0.3
cisco:firepower_threat_defensecisco firepower threat defenselt7.0.1

CPE	Name	Operator	Version
cisco:firepower_management_center_virtual_appliance	cisco firepower management center virtual appliance	eq	6.2.3
cisco:firepower_management_center_virtual_appliance	cisco firepower management center virtual appliance	eq	6.4.0
cisco:firepower_management_center_virtual_appliance	cisco firepower management center virtual appliance	eq	6.6.1
cisco:firepower_management_center_virtual_appliance	cisco firepower management center virtual appliance	eq	6.7.0
cisco:firepower_management_center_virtual_appliance	cisco firepower management center virtual appliance	eq	7.0.0
cisco:firepower_management_center_virtual_appliance	cisco firepower management center virtual appliance	eq	7.1.0
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.4.0.13
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.6.5
cisco:firepower_threat_defense	cisco firepower threat defense	lt	6.7.0.3
cisco:firepower_threat_defense	cisco firepower threat defense	lt	7.0.1

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CNA Affected

[
  {
    "product": "Cisco Firepower Threat Defense Software ",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc

6.6 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

6.1 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

Related for CVE-2021-34761

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