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Vulnerability Details :

CVE-2021-1422

Summary
Assigner-cisco
Assigner Org ID-d1c1063e-7a18-46af-9102-31f8928bc633
Published At-16 Jul, 2021 | 12:25
Updated At-07 Nov, 2024 | 22:06
Rejected At-
Credits

Cisco Adaptive Security Appliance Software Release 9.16.1 and Cisco Firepower Threat Defense Software Release 7.0.0 IPsec Denial of Service Vulnerability

A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data. Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.

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:16 Jul, 2021 | 12:25
Updated At:07 Nov, 2024 | 22:06
Rejected At:
▼CVE Numbering Authority (CNA)
Cisco Adaptive Security Appliance Software Release 9.16.1 and Cisco Firepower Threat Defense Software Release 7.0.0 IPsec Denial of Service Vulnerability

A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data. Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.

Affected Products
Vendor
Cisco Systems, Inc.Cisco
Product
Cisco Adaptive Security Appliance (ASA) Software
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
CWECWE-617CWE-617
Type: CWE
CWE ID: CWE-617
Description: CWE-617
Metrics
VersionBase scoreBase severityVector
3.17.7HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Version: 3.1
Base score: 7.7
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits

The Cisco Product Security Incident Response Team (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-asa-ftd-ipsec-dos-TFKQbgWC
vendor-advisory
x_refsource_CISCO
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC
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-asa-ftd-ipsec-dos-TFKQbgWC
vendor-advisory
x_refsource_CISCO
x_transferred
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC
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:16 Jul, 2021 | 13:15
Updated At:07 Nov, 2023 | 03:28

A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data. Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.

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
Primary3.17.7HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Secondary3.17.7HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Primary2.06.8MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:C
Type: Primary
Version: 3.1
Base score: 7.7
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 7.7
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Type: Primary
Version: 2.0
Base score: 6.8
Base severity: MEDIUM
Vector:
AV:N/AC:L/Au:S/C:N/I:N/A:C
CPE Matches
Cisco Systems, Inc.
cisco
>>adaptive_security_appliance_software>>9.16.1
cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.1:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>7.0.0.0
cpe:2.3:o:cisco:firepower_threat_defense:7.0.0.0:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>adaptive_security_virtual_appliance>>-
cpe:2.3:a:cisco:adaptive_security_virtual_appliance:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_2100>>-
cpe:2.3:h:cisco:firepower_2100:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_2110>>-
cpe:2.3:h:cisco:firepower_2110:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_2120>>-
cpe:2.3:h:cisco:firepower_2120:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_2130>>-
cpe:2.3:h:cisco:firepower_2130:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_2140>>-
cpe:2.3:h:cisco:firepower_2140:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ftd_virtual>>-
cpe:2.3:h:cisco:ftd_virtual:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-617Primarynvd@nist.gov
CWE-617Secondaryykramarz@cisco.com
CWE ID: CWE-617
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-617
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-asa-ftd-ipsec-dos-TFKQbgWCykramarz@cisco.com
Vendor Advisory
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC
Source: ykramarz@cisco.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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ShareView Details
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Assigner-Cisco Systems, Inc.
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EPSS-0.28% / 50.78%
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Updated-01 Aug, 2025 | 18:28
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Action-Not Available
Vendor-Cisco Systems, Inc.
Product-ios_xrCisco IOS XR Software
CWE ID-CWE-617
Reachable Assertion
CVE-2022-20694
Matching Score-6
Assigner-Cisco Systems, Inc.
ShareView Details
Matching Score-6
Assigner-Cisco Systems, Inc.
CVSS Score-6.8||MEDIUM
EPSS-0.40% / 60.07%
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7 Day CHG~0.00%
Published-15 Apr, 2022 | 14:15
Updated-06 Nov, 2024 | 16:26
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Cisco IOS XE Software Border Gateway Protocol Resource Public Key Infrastructure Denial of Service Vulnerability

A vulnerability in the implementation of the Resource Public Key Infrastructure (RPKI) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Border Gateway Protocol (BGP) process to crash, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of a specific RPKI to Router (RTR) Protocol packet header. An attacker could exploit this vulnerability by compromising the RPKI validator server and sending a specifically crafted RTR packet to an affected device. Alternatively, the attacker could use man-in-the-middle techniques to impersonate the RPKI validator server and send a crafted RTR response packet over the established RTR TCP connection to the affected device. A successful exploit could allow the attacker to cause a DoS condition because the BGP process could constantly restart and BGP routing could become unstable.

Action-Not Available
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Product-ios_xeCisco IOS XE Software
CWE ID-CWE-617
Reachable Assertion
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