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Vulnerability Details :

CVE-2021-34761

Summary
Assigner-cisco
Assigner Org ID-d1c1063e-7a18-46af-9102-31f8928bc633
Published At-27 Oct, 2021 | 18:55
Updated At-07 Nov, 2024 | 21:44
Rejected At-
Credits

Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:cisco
Assigner Org ID:d1c1063e-7a18-46af-9102-31f8928bc633
Published At:27 Oct, 2021 | 18:55
Updated At:07 Nov, 2024 | 21:44
Rejected At:
▼CVE Numbering Authority (CNA)
Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability

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 Products
Vendor
Cisco Systems, Inc.Cisco
Product
Cisco Firepower Threat Defense Software
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
CWECWE-73CWE-73
Type: CWE
CWE ID: CWE-73
Description: CWE-73
Metrics
VersionBase scoreBase severityVector
3.14.4MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Version: 3.1
Base score: 4.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc
vendor-advisory
x_refsource_CISCO
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc
Resource:
vendor-advisory
x_refsource_CISCO
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc
vendor-advisory
x_refsource_CISCO
x_transferred
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc
Resource:
vendor-advisory
x_refsource_CISCO
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:ykramarz@cisco.com
Published At:27 Oct, 2021 | 19:15
Updated At:07 Nov, 2023 | 03:36

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.16.0MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Secondary3.14.4MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Primary2.06.6MEDIUM
AV:L/AC:L/Au:N/C:N/I:C/A:C
Type: Primary
Version: 3.1
Base score: 6.0
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 4.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Type: Primary
Version: 2.0
Base score: 6.6
Base severity: MEDIUM
Vector:
AV:L/AC:L/Au:N/C:N/I:C/A:C
CPE Matches
Cisco Systems, Inc.
cisco
>>firepower_management_center_virtual_appliance>>6.2.3
cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.2.3:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_management_center_virtual_appliance>>6.4.0
cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.4.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_management_center_virtual_appliance>>6.6.1
cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.6.1:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_management_center_virtual_appliance>>6.7.0
cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:6.7.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_management_center_virtual_appliance>>7.0.0
cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:7.0.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_management_center_virtual_appliance>>7.1.0
cpe:2.3:a:cisco:firepower_management_center_virtual_appliance:7.1.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.4.0(inclusive) to 6.4.0.13(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.6.0(inclusive) to 6.6.5(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.7.0(inclusive) to 6.7.0.3(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 7.0.0(inclusive) to 7.0.1(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>sourcefire_defense_center>>6.2.3
cpe:2.3:a:cisco:sourcefire_defense_center:6.2.3:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>sourcefire_defense_center>>6.4.0
cpe:2.3:a:cisco:sourcefire_defense_center:6.4.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>sourcefire_defense_center>>6.6.1
cpe:2.3:a:cisco:sourcefire_defense_center:6.6.1:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>sourcefire_defense_center>>6.7.0
cpe:2.3:a:cisco:sourcefire_defense_center:6.7.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>sourcefire_defense_center>>7.0.0
cpe:2.3:a:cisco:sourcefire_defense_center:7.0.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>sourcefire_defense_center>>7.1.0
cpe:2.3:a:cisco:sourcefire_defense_center:7.1.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-668Primarynvd@nist.gov
CWE-73Secondaryykramarz@cisco.com
CWE ID: CWE-668
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-73
Type: Secondary
Source: ykramarz@cisco.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVcykramarz@cisco.com
Vendor Advisory
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc
Source: ykramarz@cisco.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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