cisco-sa-sigbypass-fcvppcep
Vulnerability from csaf_cisco
Published
2020-05-06 16:00
Modified
2020-05-06 16:00
Summary
Cisco Firepower Threat Defense Software Signature Verification Bypass Vulnerability
Notes
Summary
A vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker with administrator-level credentials to install a malicious software patch on an affected device.
The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.
Cisco has released software updates that address the vulnerability described in this advisory. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sigbypass-FcvPPCeP ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sigbypass-FcvPPCeP"]
Vulnerable Products
At the time of publication, this vulnerability affected Cisco FTD Software releases earlier than Release 6.2.2.1.
For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software ["#fs"] section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability.
Cisco has determined that this vulnerability does not affect Cisco Adaptive Security Appliance (ASA) Software or Cisco Firepower Management Center (FMC) Software.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Fixed Releases
Cisco FTD Software
At the time of publication, the release information in the following table(s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability.
Cisco FTD Major Release First Fixed Release for This Vulnerability Earlier than 6.1.01 Migrate to a fixed release. 6.1.0 Migrate to a fixed release. 6.2.0 Migrate to a fixed release. 6.2.1 Migrate to a fixed release. 6.2.2 6.2.2.1 6.2.3 Not Vulnerable. 6.3.0 Not vulnerable. 6.4.0 Not vulnerable. 6.5.0 Not vulnerable. 6.6.0 Not vulnerable.
1. Cisco FMC and FTD Software releases 6.0.1 and earlier have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.
To upgrade to a fixed release of Cisco FTD Software, customers can do one of the following:
For devices that are managed by using Cisco Firepower Management Center (FMC), use the FMC interface to install the upgrade. After installation is complete, reapply the access control policy.
For devices that are managed by using Cisco Firepower Device Manager (FDM), use the FDM interface to install the upgrade. After installation is complete, reapply the access control policy.
Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements
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.
Source
This vulnerability was found during internal security testing.
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
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"category": "summary",
"text": "A vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker with administrator-level credentials to install a malicious software patch on an affected device.\r\n\r\nThe vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.\r\n\r\nCisco has released software updates that address the vulnerability described in this advisory. There are no workarounds that address this vulnerability.\r\n\r\nThis advisory is available at the following link:\r\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sigbypass-FcvPPCeP [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sigbypass-FcvPPCeP\"]",
"title": "Summary"
},
{
"category": "general",
"text": "At the time of publication, this vulnerability affected Cisco FTD Software releases earlier than Release 6.2.2.1.\r\n\r\nFor information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software [\"#fs\"] section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.",
"title": "Vulnerable Products"
},
{
"category": "general",
"text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has determined that this vulnerability does not affect Cisco Adaptive Security Appliance (ASA) Software or Cisco Firepower Management Center (FMC) Software.",
"title": "Products Confirmed Not Vulnerable"
},
{
"category": "general",
"text": "There are no workarounds that address this vulnerability.",
"title": "Workarounds"
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{
"category": "general",
"text": "When considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n Fixed Releases\r\nCisco FTD Software\r\n\r\nAt the time of publication, the release information in the following table(s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.\r\n\r\nThe left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability.\r\n Cisco FTD Major Release First Fixed Release for This Vulnerability Earlier than 6.1.01 Migrate to a fixed release. 6.1.0 Migrate to a fixed release. 6.2.0 Migrate to a fixed release. 6.2.1 Migrate to a fixed release. 6.2.2 6.2.2.1 6.2.3 Not Vulnerable. 6.3.0 Not vulnerable. 6.4.0 Not vulnerable. 6.5.0 Not vulnerable. 6.6.0 Not vulnerable.\r\n1. Cisco FMC and FTD Software releases 6.0.1 and earlier have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.\r\n\r\nTo upgrade to a fixed release of Cisco FTD Software, customers can do one of the following:\r\n\r\nFor devices that are managed by using Cisco Firepower Management Center (FMC), use the FMC interface to install the upgrade. After installation is complete, reapply the access control policy.\r\nFor devices that are managed by using Cisco Firepower Device Manager (FDM), use the FDM interface to install the upgrade. After installation is complete, reapply the access control policy.",
"title": "Fixed Software"
},
{
"category": "general",
"text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
"title": "Vulnerability Policy"
},
{
"category": "general",
"text": "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.",
"title": "Exploitation and Public Announcements"
},
{
"category": "general",
"text": "This vulnerability was found during internal security testing.",
"title": "Source"
},
{
"category": "legal_disclaimer",
"text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
"title": "Legal Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "Emergency Support:\r\n+1 877 228 7302 (toll-free within North America)\r\n+1 408 525 6532 (International direct-dial)\r\nNon-emergency Support:\r\nEmail: psirt@cisco.com\r\nSupport requests that are received via e-mail are typically acknowledged within 48 hours.",
"issuing_authority": "Cisco product security incident response is the responsibility of the Cisco Product Security Incident Response Team (PSIRT). The Cisco PSIRT is a dedicated, global team that manages the receipt, investigation, and public reporting of security vulnerability information that is related to Cisco products and networks. The on-call Cisco PSIRT works 24x7 with Cisco customers, independent security researchers, consultants, industry organizations, and other vendors to identify possible security issues with Cisco products and networks.\r\nMore information can be found in Cisco Security Vulnerability Policy available at https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html",
"name": "Cisco",
"namespace": "https://wwww.cisco.com"
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"references": [
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"category": "self",
"summary": "Cisco Firepower Threat Defense Software Signature Verification Bypass Vulnerability",
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"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
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"title": "Cisco Firepower Threat Defense Software Signature Verification Bypass Vulnerability",
"tracking": {
"current_release_date": "2020-05-06T16:00:00+00:00",
"generator": {
"date": "2022-10-22T03:03:47+00:00",
"engine": {
"name": "TVCE"
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"number": "1.0.0",
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"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"branches": [
{
"category": "service_pack",
"name": "6.0.0",
"product": {
"name": "6.0.0",
"product_id": "CSAFPID-220205"
}
},
{
"category": "service_pack",
"name": "6.0.1",
"product": {
"name": "6.0.1",
"product_id": "CSAFPID-220206"
}
},
{
"category": "service_pack",
"name": "6.0.1.3",
"product": {
"name": "6.0.1.3",
"product_id": "CSAFPID-227125"
}
},
{
"category": "service_pack",
"name": "6.0.1.1",
"product": {
"name": "6.0.1.1",
"product_id": "CSAFPID-232931"
}
},
{
"category": "service_pack",
"name": "6.0.1.2",
"product": {
"name": "6.0.1.2",
"product_id": "CSAFPID-232932"
}
},
{
"category": "service_pack",
"name": "6.0.1.4",
"product": {
"name": "6.0.1.4",
"product_id": "CSAFPID-232933"
}
},
{
"category": "service_pack",
"name": "6.0.0.1",
"product": {
"name": "6.0.0.1",
"product_id": "CSAFPID-272046"
}
}
],
"category": "product_version",
"name": "6.0"
},
{
"branches": [
{
"category": "service_pack",
"name": "5.3.0",
"product": {
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"product_id": "CSAFPID-223029"
}
}
],
"category": "product_version",
"name": "5.3"
},
{
"branches": [
{
"category": "service_pack",
"name": "5.4.0",
"product": {
"name": "5.4.0",
"product_id": "CSAFPID-223031"
}
}
],
"category": "product_version",
"name": "5.4"
},
{
"branches": [
{
"category": "service_pack",
"name": "6.1.0",
"product": {
"name": "6.1.0",
"product_id": "CSAFPID-223033"
}
},
{
"category": "service_pack",
"name": "6.1.0.2",
"product": {
"name": "6.1.0.2",
"product_id": "CSAFPID-226358"
}
},
{
"category": "service_pack",
"name": "6.1.0.1",
"product": {
"name": "6.1.0.1",
"product_id": "CSAFPID-232920"
}
},
{
"category": "service_pack",
"name": "6.1.0.3",
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"name": "6.1.0.3",
"product_id": "CSAFPID-232921"
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},
{
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"product_id": "CSAFPID-232922"
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},
{
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"name": "6.1.0.5",
"product": {
"name": "6.1.0.5",
"product_id": "CSAFPID-232923"
}
},
{
"category": "service_pack",
"name": "6.1.0.6",
"product": {
"name": "6.1.0.6",
"product_id": "CSAFPID-232924"
}
},
{
"category": "service_pack",
"name": "6.1.0.7",
"product": {
"name": "6.1.0.7",
"product_id": "CSAFPID-251753"
}
}
],
"category": "product_version",
"name": "6.1"
},
{
"branches": [
{
"category": "service_pack",
"name": "6.2.0",
"product": {
"name": "6.2.0",
"product_id": "CSAFPID-225827"
}
},
{
"category": "service_pack",
"name": "6.2.1",
"product": {
"name": "6.2.1",
"product_id": "CSAFPID-226359"
}
},
{
"category": "service_pack",
"name": "6.2.2",
"product": {
"name": "6.2.2",
"product_id": "CSAFPID-226360"
}
},
{
"category": "service_pack",
"name": "6.2.0.1",
"product": {
"name": "6.2.0.1",
"product_id": "CSAFPID-232925"
}
},
{
"category": "service_pack",
"name": "6.2.0.2",
"product": {
"name": "6.2.0.2",
"product_id": "CSAFPID-232926"
}
},
{
"category": "service_pack",
"name": "6.2.0.3",
"product": {
"name": "6.2.0.3",
"product_id": "CSAFPID-232927"
}
},
{
"category": "service_pack",
"name": "6.2.0.4",
"product": {
"name": "6.2.0.4",
"product_id": "CSAFPID-232928"
}
},
{
"category": "service_pack",
"name": "6.2.0.5",
"product": {
"name": "6.2.0.5",
"product_id": "CSAFPID-247897"
}
},
{
"category": "service_pack",
"name": "6.2.0.6",
"product": {
"name": "6.2.0.6",
"product_id": "CSAFPID-247898"
}
}
],
"category": "product_version",
"name": "6.2"
}
],
"category": "product_family",
"name": "Cisco Firepower Threat Defense Software"
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2020-3308",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCvg16015"
}
],
"notes": [
{
"category": "general",
"text": "No additional information for this vulneraiblity is currently avaialbe.",
"title": "No Notes"
}
],
"product_status": {
"known_affected": [
"CSAFPID-220205",
"CSAFPID-220206",
"CSAFPID-223029",
"CSAFPID-223031",
"CSAFPID-223033",
"CSAFPID-225827",
"CSAFPID-226358",
"CSAFPID-226359",
"CSAFPID-226360",
"CSAFPID-227125",
"CSAFPID-232920",
"CSAFPID-232921",
"CSAFPID-232922",
"CSAFPID-232923",
"CSAFPID-232924",
"CSAFPID-232925",
"CSAFPID-232926",
"CSAFPID-232927",
"CSAFPID-232928",
"CSAFPID-232931",
"CSAFPID-232932",
"CSAFPID-232933",
"CSAFPID-247897",
"CSAFPID-247898",
"CSAFPID-251753",
"CSAFPID-272046"
]
},
"release_date": "2020-05-06T16:00:00+00:00",
"remediations": [
{
"category": "none_available",
"details": "No remediation is available at this time.",
"product_ids": [
"CSAFPID-220205",
"CSAFPID-220206",
"CSAFPID-223029",
"CSAFPID-223031",
"CSAFPID-223033",
"CSAFPID-225827",
"CSAFPID-226358",
"CSAFPID-226359",
"CSAFPID-226360",
"CSAFPID-227125",
"CSAFPID-232920",
"CSAFPID-232921",
"CSAFPID-232922",
"CSAFPID-232923",
"CSAFPID-232924",
"CSAFPID-232925",
"CSAFPID-232926",
"CSAFPID-232927",
"CSAFPID-232928",
"CSAFPID-232931",
"CSAFPID-232932",
"CSAFPID-232933",
"CSAFPID-247897",
"CSAFPID-247898",
"CSAFPID-251753",
"CSAFPID-272046"
]
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 4.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
"version": "3.0"
},
"products": [
"CSAFPID-220205",
"CSAFPID-220206",
"CSAFPID-223029",
"CSAFPID-223031",
"CSAFPID-223033",
"CSAFPID-225827",
"CSAFPID-226358",
"CSAFPID-226359",
"CSAFPID-226360",
"CSAFPID-227125",
"CSAFPID-232920",
"CSAFPID-232921",
"CSAFPID-232922",
"CSAFPID-232923",
"CSAFPID-232924",
"CSAFPID-232925",
"CSAFPID-232926",
"CSAFPID-232927",
"CSAFPID-232928",
"CSAFPID-232931",
"CSAFPID-232932",
"CSAFPID-232933",
"CSAFPID-247897",
"CSAFPID-247898",
"CSAFPID-251753",
"CSAFPID-272046"
]
}
],
"title": "Cisco Firepower System Software Signature Verification Bypass Vulnerability"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.