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CiscoCVE-2021-1402

HistoryApr 29, 2021 - 6:15 p.m.

CVE-2021-1402

2021-04-2918:15:08

CWE-119

CWE-20

cisco

web.nvd.nist.gov

cisco

firepower threat defense

ftd software

vulnerability

ssl

tls

denial of service

dos

nvd

cve-2021-1402

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.3

Confidence

High

EPSS

0.002

Percentile

52.7%

JSON

A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload.

Affected configurations

Nvd

Node

ciscofirepower_threat_defenseRange6.3.0–6.4.0

ciscofirepower_threat_defenseRange6.5.0–6.6.0

AND

ciscofirepower_threat_defense_virtualMatch-

ciscoasa_5512-xMatch-

ciscoasa_5515-xMatch-

ciscoasa_5525-xMatch-

ciscoasa_5545-xMatch-

ciscoasa_5555-xMatch-

ciscofirepower_1010Match-

ciscofirepower_1120Match-

ciscofirepower_1140Match-

ciscofirepower_1150Match-

ciscofirepower_2110Match-

ciscofirepower_2120Match-

ciscofirepower_2130Match-

ciscofirepower_2140Match-

ciscoisa_3000Match-

VendorProductVersionCPE
ciscofirepower_threat_defense*cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
ciscofirepower_threat_defense_virtual-cpe:2.3:a:cisco:firepower_threat_defense_virtual:-:*:*:*:*:*:*:*
ciscoasa_5512-x-cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*
ciscoasa_5515-x-cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*
ciscoasa_5525-x-cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*
ciscoasa_5545-x-cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:*
ciscoasa_5555-x-cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*
ciscofirepower_1010-cpe:2.3:h:cisco:firepower_1010:-:*:*:*:*:*:*:*
ciscofirepower_1120-cpe:2.3:h:cisco:firepower_1120:-:*:*:*:*:*:*:*
ciscofirepower_1140-cpe:2.3:h:cisco:firepower_1140:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	firepower_threat_defense	*	cpe:2.3:a:cisco:firepower_threat_defense::::::::
cisco	firepower_threat_defense_virtual	-	cpe:2.3:a:cisco:firepower_threat_defense_virtual:-:::::::*
cisco	asa_5512-x	-	cpe:2.3:h:cisco:asa_5512-x:-:::::::*
cisco	asa_5515-x	-	cpe:2.3:h:cisco:asa_5515-x:-:::::::*
cisco	asa_5525-x	-	cpe:2.3:h:cisco:asa_5525-x:-:::::::*
cisco	asa_5545-x	-	cpe:2.3:h:cisco:asa_5545-x:-:::::::*
cisco	asa_5555-x	-	cpe:2.3:h:cisco:asa_5555-x:-:::::::*
cisco	firepower_1010	-	cpe:2.3:h:cisco:firepower_1010:-:::::::*
cisco	firepower_1120	-	cpe:2.3:h:cisco:firepower_1120:-:::::::*
cisco	firepower_1140	-	cpe:2.3:h:cisco:firepower_1140:-:::::::*

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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-ssl-decrypt-dos-DdyLuK6c

Social References

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.3

Confidence

High

EPSS

0.002

Percentile

52.7%

JSON

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