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Vulnerability Details :

CVE-2021-1495

Summary
Assigner-cisco
Assigner Org ID-d1c1063e-7a18-46af-9102-31f8928bc633
Published At-29 Apr, 2021 | 17:31
Updated At-08 Nov, 2024 | 23:22
Rejected At-
Credits

Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.

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:29 Apr, 2021 | 17:31
Updated At:08 Nov, 2024 | 23:22
Rejected At:
▼CVE Numbering Authority (CNA)
Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.

Affected Products
Vendor
Cisco Systems, Inc.Cisco
Product
Cisco Firepower Threat Defense Software
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/ANA
Type: text
CWE ID: N/A
Description: NA
Metrics
VersionBase scoreBase severityVector
3.15.8MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Version: 3.1
Base score: 5.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
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-http-fp-bp-KfDdcQhc
vendor-advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
mailing-list
https://www.debian.org/security/2023/dsa-5354
vendor-advisory
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc
Resource:
vendor-advisory
Hyperlink: https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
Resource:
mailing-list
Hyperlink: https://www.debian.org/security/2023/dsa-5354
Resource:
vendor-advisory
▼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-http-fp-bp-KfDdcQhc
vendor-advisory
x_transferred
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
mailing-list
x_transferred
https://www.debian.org/security/2023/dsa-5354
vendor-advisory
x_transferred
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc
Resource:
vendor-advisory
x_transferred
Hyperlink: https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
Resource:
mailing-list
x_transferred
Hyperlink: https://www.debian.org/security/2023/dsa-5354
Resource:
vendor-advisory
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:29 Apr, 2021 | 18:15
Updated At:07 Nov, 2023 | 03:28

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.

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
Primary3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Secondary3.15.8MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Primary2.05.0MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
Type: Primary
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 5.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Type: Primary
Version: 2.0
Base score: 5.0
Base severity: MEDIUM
Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:N
CPE Matches

Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions before 6.4.0.12(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.5.0(inclusive) to 6.6.4(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>firepower_threat_defense>>Versions from 6.7.0(inclusive) to 6.7.0.2(exclusive)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xe>>Versions from 16.12(inclusive) to 16.12.5(exclusive)
cpe:2.3:a:cisco:ios_xe:*:*:*:*:*:*:*:*
snort
snort
>>snort>>Versions before 2.9.17.1(exclusive)
cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xe>>Versions from 17.1(inclusive) to 17.3.3(exclusive)
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xe>>Versions from 17.4(inclusive) to 17.4.1(exclusive)
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>1100-4g\/6g_integrated_services_router>>-
cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>1101_integrated_services_router>>-
cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>1109_integrated_services_router>>-
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>1111x_integrated_services_router>>-
cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>111x_integrated_services_router>>-
cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>1120_integrated_services_router>>-
cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>1160_integrated_services_router>>-
cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>3000_integrated_services_router>>-
cpe:2.3:h:cisco:3000_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>4221_integrated_services_router>>-
cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>4331_integrated_services_router>>-
cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>4431_integrated_services_router>>-
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>4461_integrated_services_router>>-
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>c8200-1n-4t>>-
cpe:2.3:h:cisco:c8200-1n-4t:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>c8200l-1n-4t>>-
cpe:2.3:h:cisco:c8200l-1n-4t:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>catalyst_8300-1n1s-4t2x>>-
cpe:2.3:h:cisco:catalyst_8300-1n1s-4t2x:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>catalyst_8300-1n1s-6t>>-
cpe:2.3:h:cisco:catalyst_8300-1n1s-6t:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>catalyst_8300-2n2s-4t2x>>-
cpe:2.3:h:cisco:catalyst_8300-2n2s-4t2x:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>catalyst_8300-2n2s-6t>>-
cpe:2.3:h:cisco:catalyst_8300-2n2s-6t:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>catalyst_8500l>>-
cpe:2.3:h:cisco:catalyst_8500l:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-755Primarynvd@nist.gov
CWE ID: CWE-755
Type: Primary
Source: nvd@nist.gov
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.htmlykramarz@cisco.com
N/A
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhcykramarz@cisco.com
Vendor Advisory
https://www.debian.org/security/2023/dsa-5354ykramarz@cisco.com
N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
Source: ykramarz@cisco.com
Resource: N/A
Hyperlink: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc
Source: ykramarz@cisco.com
Resource:
Vendor Advisory
Hyperlink: https://www.debian.org/security/2023/dsa-5354
Source: ykramarz@cisco.com
Resource: N/A

Change History

0
Information is not available yet

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