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CVE-2022-20915
Vulnerability from cvelistv5
Published
2022-10-10 20:43
Modified
2024-11-01 18:49
Severity ?
EPSS score ?
Summary
Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability
References
Impacted products
| ▼ | Vendor | Product |
|---|---|---|
| Cisco | Cisco IOS XE Software |
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gsd-2022-20915
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.
Aliases
Aliases
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cisco-sa-iosxe-6vpe-dos-tjbtf5zv
Vulnerability from csaf_cisco
Published
2022-09-28 16:00
Modified
2022-09-28 16:00
Summary
Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability
Notes
Summary
A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.
Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv"]
This advisory is part of the September 2022 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2022 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74745"]
Vulnerable Products
This vulnerability affects Cisco devices if they are running a vulnerable release of Cisco IOS XE Software and have both 6VPE and ZBFW features enabled.
For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
Determine the Device Configuration
Determine Whether IPv6 VPN Is Enabled
To determine whether IPv6 VPN is enabled, issue the show running-config | include address-family vpnv6 CLI command. If there is an error or no output, IPv6 VPN is not enabled. The following output shows a device with IPv6 VPN enabled:
Router# show running-config | include address-family vpnv6
address-family vpnv6
Determine Whether MPLS and ZBFW Are Enabled
To determine whether MPLS and ZBFW are enabled, issue the show running-config | include interface|zone-member|mpls ip CLI command. The following output shows an interface that has both MPLS and ZBFW enabled.
Router# show running-config | include interface|zone-member|mpls ip
interface GigabitEthernet0/0/0
zone-member security zone_name
mpls ip
If both mpls ip and zone-member security are displayed on the same interface and address-family vpnv6 is configured, further verification is required. Because 6VPE is the mechanism by which the IPv4 MPLS backbone provides IPv6 VPN services, the IPv6 routing table must be investigated to confirm whether IPv6 VPN networks are being forwarded though an IPv4 MPLS backbone. For more information about 6VPE, see the MPLS Layer 3 VPNs Configuration Guide ["https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l3_vpns/configuration/xe-16/mp-l3-vpns-xe-16-book/ipv6-vpn-over-mpls.html"].
Note: IPv6 over MPLS (6PE) configurations are not affected.
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 confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XR Software
Meraki products
NX-OS Software
Workarounds
There is a workaround that addresses this vulnerability. Administrators can disable ICMPv6 unreachables on the mpls ip and zone-member security enabled interface with the CLI command no ipv6 unreachables.
While this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
Fixed Software
Cisco has released free software updates ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.
Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html ["https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"]
Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
The Cisco Support and Downloads page ["https://www.cisco.com/c/en/us/support/index.html"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.
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 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.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"]. This tool identifies any Cisco security advisories that impact a specific software release and the earliest release that fixes the vulnerabilities that are described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities that are described in all the advisories that the Software Checker identifies (“Combined First Fixed”).
To use the tool, go to the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] page and follow the instructions. Alternatively, use the following form to determine whether a release is affected by any Cisco Security Advisory. To use the form, follow these steps:
Choose which advisories the tool will search—only this advisory, only advisories with a Critical or High Security Impact Rating (SIR) ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"], or all advisories.
Enter a release number—for example, 15.9(3)M2 or 17.3.3.
Click Check.
Only this advisory All Critical and High advisories All advisories
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 the resolution of a Cisco TAC support case.
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 implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.\r\n\r\nCisco has released software updates that address this vulnerability. There are 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-iosxe-6vpe-dos-tJBtf5Zv [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv\"]\r\n\r\nThis advisory is part of the September 2022 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2022 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74745\"]",
"title": "Summary"
},
{
"category": "general",
"text": "This vulnerability affects Cisco devices if they are running a vulnerable release of Cisco IOS XE Software and have both 6VPE and ZBFW features enabled.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n Determine the Device Configuration\r\nDetermine Whether IPv6 VPN Is Enabled\r\n\r\nTo determine whether IPv6 VPN is enabled, issue the show running-config | include address-family vpnv6 CLI command. If there is an error or no output, IPv6 VPN is not enabled. The following output shows a device with IPv6 VPN enabled:\r\n\r\n\r\nRouter# show running-config | include address-family vpnv6\r\n address-family vpnv6\r\n\r\nDetermine Whether MPLS and ZBFW Are Enabled\r\n\r\nTo determine whether MPLS and ZBFW are enabled, issue the show running-config | include interface|zone-member|mpls ip CLI command. The following output shows an interface that has both MPLS and ZBFW enabled.\r\n\r\n\r\nRouter# show running-config | include interface|zone-member|mpls ip\r\ninterface GigabitEthernet0/0/0\r\nzone-member security zone_name\r\nmpls ip\r\n\r\nIf both mpls ip and zone-member security are displayed on the same interface and address-family vpnv6 is configured, further verification is required. Because 6VPE is the mechanism by which the IPv4 MPLS backbone provides IPv6 VPN services, the IPv6 routing table must be investigated to confirm whether IPv6 VPN networks are being forwarded though an IPv4 MPLS backbone. For more information about 6VPE, see the MPLS Layer 3 VPNs Configuration Guide [\"https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l3_vpns/configuration/xe-16/mp-l3-vpns-xe-16-book/ipv6-vpn-over-mpls.html\"].\r\n\r\n\r\nNote: IPv6 over MPLS (6PE) configurations are not affected.",
"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 confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XR Software\r\nMeraki products\r\nNX-OS Software",
"title": "Products Confirmed Not Vulnerable"
},
{
"category": "general",
"text": "There is a workaround that addresses this vulnerability. Administrators can disable ICMPv6 unreachables on the mpls ip and zone-member security enabled interface with the CLI command no ipv6 unreachables.\r\n\r\nWhile this workaround has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
"title": "Workarounds"
},
{
"category": "general",
"text": "Cisco has released free software updates [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu\"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.\r\n\r\nCustomers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nThe Cisco Support and Downloads page [\"https://www.cisco.com/c/en/us/support/index.html\"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.\r\n\r\nWhen 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 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 Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"]. This tool identifies any Cisco security advisories that impact a specific software release and the earliest release that fixes the vulnerabilities that are described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities that are described in all the advisories that the Software Checker identifies (\u201cCombined First Fixed\u201d).\r\n\r\nTo use the tool, go to the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] page and follow the instructions. Alternatively, use the following form to determine whether a release is affected by any Cisco Security Advisory. To use the form, follow these steps:\r\n\r\nChoose which advisories the tool will search\u2014only this advisory, only advisories with a Critical or High Security Impact Rating (SIR) [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr\"], or all advisories.\r\nEnter a release number\u2014for example, 15.9(3)M2 or 17.3.3.\r\nClick Check.\r\n\r\n Only this advisory All Critical and High advisories All advisories",
"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 the resolution of a Cisco TAC support case.",
"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"
},
"references": [
{
"category": "self",
"summary": "Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv"
},
{
"category": "external",
"summary": "Cisco Event Response: September 2022 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
"url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74745"
},
{
"category": "external",
"summary": "Cisco Security Vulnerability Policy",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
},
{
"category": "external",
"summary": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Event Response: September 2022 Semiannual Cisco\u0026nbsp;IOS and IOS XE Software Security Advisory Bundled Publication.",
"url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74745"
},
{
"category": "external",
"summary": "MPLS Layer 3 VPNs Configuration Guide",
"url": "https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l3_vpns/configuration/xe-16/mp-l3-vpns-xe-16-book/ipv6-vpn-over-mpls.html"
},
{
"category": "external",
"summary": "free software updates",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu"
},
{
"category": "external",
"summary": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
"url": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Support and Downloads page",
"url": "https://www.cisco.com/c/en/us/support/index.html"
},
{
"category": "external",
"summary": "considering software upgrades",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Security Advisories page",
"url": "https://www.cisco.com/go/psirt"
},
{
"category": "external",
"summary": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
"url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Software Checker",
"url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Software Checker",
"url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
},
{
"category": "external",
"summary": "Security Impact Rating (SIR)",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"
},
{
"category": "external",
"summary": "Security Vulnerability Policy",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
}
],
"title": "Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability",
"tracking": {
"current_release_date": "2022-09-28T16:00:00+00:00",
"generator": {
"date": "2022-10-22T03:16:01+00:00",
"engine": {
"name": "TVCE"
}
},
"id": "cisco-sa-iosxe-6vpe-dos-tJBtf5Zv",
"initial_release_date": "2022-09-28T16:00:00+00:00",
"revision_history": [
{
"date": "2022-09-28T15:46:34+00:00",
"number": "1.0.0",
"summary": "Initial public release."
}
],
"status": "final",
"version": "1.0.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"branches": [
{
"category": "service_pack",
"name": "3.16.0S",
"product": {
"name": "3.16.0S",
"product_id": "CSAFPID-210081"
}
},
{
"category": "service_pack",
"name": "3.16.1aS",
"product": {
"name": "3.16.1aS",
"product_id": "CSAFPID-213477"
}
},
{
"category": "service_pack",
"name": "3.16.2S",
"product": {
"name": "3.16.2S",
"product_id": "CSAFPID-213478"
}
},
{
"category": "service_pack",
"name": "3.16.0cS",
"product": {
"name": "3.16.0cS",
"product_id": "CSAFPID-213778"
}
},
{
"category": "service_pack",
"name": "3.16.3S",
"product": {
"name": "3.16.3S",
"product_id": "CSAFPID-213779"
}
},
{
"category": "service_pack",
"name": "3.16.2bS",
"product": {
"name": "3.16.2bS",
"product_id": "CSAFPID-217265"
}
},
{
"category": "service_pack",
"name": "3.16.4aS",
"product": {
"name": "3.16.4aS",
"product_id": "CSAFPID-220993"
}
},
{
"category": "service_pack",
"name": "3.16.4bS",
"product": {
"name": "3.16.4bS",
"product_id": "CSAFPID-222257"
}
},
{
"category": "service_pack",
"name": "3.16.4gS",
"product": {
"name": "3.16.4gS",
"product_id": "CSAFPID-222693"
}
},
{
"category": "service_pack",
"name": "3.16.5S",
"product": {
"name": "3.16.5S",
"product_id": "CSAFPID-222694"
}
},
{
"category": "service_pack",
"name": "3.16.4cS",
"product": {
"name": "3.16.4cS",
"product_id": "CSAFPID-222925"
}
},
{
"category": "service_pack",
"name": "3.16.4dS",
"product": {
"name": "3.16.4dS",
"product_id": "CSAFPID-223252"
}
},
{
"category": "service_pack",
"name": "3.16.4eS",
"product": {
"name": "3.16.4eS",
"product_id": "CSAFPID-224702"
}
},
{
"category": "service_pack",
"name": "3.16.6S",
"product": {
"name": "3.16.6S",
"product_id": "CSAFPID-225099"
}
},
{
"category": "service_pack",
"name": "3.16.5aS",
"product": {
"name": "3.16.5aS",
"product_id": "CSAFPID-225466"
}
},
{
"category": "service_pack",
"name": "3.16.5bS",
"product": {
"name": "3.16.5bS",
"product_id": "CSAFPID-225832"
}
},
{
"category": "service_pack",
"name": "3.16.7S",
"product": {
"name": "3.16.7S",
"product_id": "CSAFPID-228690"
}
},
{
"category": "service_pack",
"name": "3.16.6bS",
"product": {
"name": "3.16.6bS",
"product_id": "CSAFPID-230303"
}
},
{
"category": "service_pack",
"name": "3.16.7aS",
"product": {
"name": "3.16.7aS",
"product_id": "CSAFPID-233141"
}
},
{
"category": "service_pack",
"name": "3.16.7bS",
"product": {
"name": "3.16.7bS",
"product_id": "CSAFPID-233447"
}
},
{
"category": "service_pack",
"name": "3.16.8S",
"product": {
"name": "3.16.8S",
"product_id": "CSAFPID-238937"
}
},
{
"category": "service_pack",
"name": "3.16.9S",
"product": {
"name": "3.16.9S",
"product_id": "CSAFPID-244912"
}
},
{
"category": "service_pack",
"name": "3.16.10S",
"product": {
"name": "3.16.10S",
"product_id": "CSAFPID-258406"
}
},
{
"category": "service_pack",
"name": "3.16.10aS",
"product": {
"name": "3.16.10aS",
"product_id": "CSAFPID-278032"
}
},
{
"category": "service_pack",
"name": "3.16.10bS",
"product": {
"name": "3.16.10bS",
"product_id": "CSAFPID-280800"
}
}
],
"category": "product_version",
"name": "3.16S"
},
{
"branches": [
{
"category": "service_pack",
"name": "3.17.0S",
"product": {
"name": "3.17.0S",
"product_id": "CSAFPID-212411"
}
},
{
"category": "service_pack",
"name": "3.17.1S",
"product": {
"name": "3.17.1S",
"product_id": "CSAFPID-212412"
}
},
{
"category": "service_pack",
"name": "3.17.2S",
"product": {
"name": "3.17.2S",
"product_id": "CSAFPID-217234"
}
},
{
"category": "service_pack",
"name": "3.17.1aS",
"product": {
"name": "3.17.1aS",
"product_id": "CSAFPID-217268"
}
},
{
"category": "service_pack",
"name": "3.17.3S",
"product": {
"name": "3.17.3S",
"product_id": "CSAFPID-222942"
}
},
{
"category": "service_pack",
"name": "3.17.4S",
"product": {
"name": "3.17.4S",
"product_id": "CSAFPID-227556"
}
}
],
"category": "product_version",
"name": "3.17S"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.2.1",
"product": {
"name": "16.2.1",
"product_id": "CSAFPID-213809"
}
},
{
"category": "service_pack",
"name": "16.2.2",
"product": {
"name": "16.2.2",
"product_id": "CSAFPID-217253"
}
}
],
"category": "product_version",
"name": "16.2"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.3.1",
"product": {
"name": "16.3.1",
"product_id": "CSAFPID-213960"
}
},
{
"category": "service_pack",
"name": "16.3.2",
"product": {
"name": "16.3.2",
"product_id": "CSAFPID-217255"
}
},
{
"category": "service_pack",
"name": "16.3.3",
"product": {
"name": "16.3.3",
"product_id": "CSAFPID-217256"
}
},
{
"category": "service_pack",
"name": "16.3.1a",
"product": {
"name": "16.3.1a",
"product_id": "CSAFPID-220802"
}
},
{
"category": "service_pack",
"name": "16.3.4",
"product": {
"name": "16.3.4",
"product_id": "CSAFPID-222711"
}
},
{
"category": "service_pack",
"name": "16.3.5",
"product": {
"name": "16.3.5",
"product_id": "CSAFPID-229124"
}
},
{
"category": "service_pack",
"name": "16.3.6",
"product": {
"name": "16.3.6",
"product_id": "CSAFPID-231667"
}
},
{
"category": "service_pack",
"name": "16.3.7",
"product": {
"name": "16.3.7",
"product_id": "CSAFPID-239264"
}
},
{
"category": "service_pack",
"name": "16.3.8",
"product": {
"name": "16.3.8",
"product_id": "CSAFPID-251165"
}
},
{
"category": "service_pack",
"name": "16.3.9",
"product": {
"name": "16.3.9",
"product_id": "CSAFPID-262389"
}
},
{
"category": "service_pack",
"name": "16.3.10",
"product": {
"name": "16.3.10",
"product_id": "CSAFPID-273563"
}
},
{
"category": "service_pack",
"name": "16.3.11",
"product": {
"name": "16.3.11",
"product_id": "CSAFPID-278402"
}
}
],
"category": "product_version",
"name": "16.3"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.4.1",
"product": {
"name": "16.4.1",
"product_id": "CSAFPID-214051"
}
},
{
"category": "service_pack",
"name": "16.4.2",
"product": {
"name": "16.4.2",
"product_id": "CSAFPID-217257"
}
},
{
"category": "service_pack",
"name": "16.4.3",
"product": {
"name": "16.4.3",
"product_id": "CSAFPID-231390"
}
}
],
"category": "product_version",
"name": "16.4"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.5.1",
"product": {
"name": "16.5.1",
"product_id": "CSAFPID-217259"
}
},
{
"category": "service_pack",
"name": "16.5.1b",
"product": {
"name": "16.5.1b",
"product_id": "CSAFPID-226330"
}
},
{
"category": "service_pack",
"name": "16.5.2",
"product": {
"name": "16.5.2",
"product_id": "CSAFPID-229187"
}
},
{
"category": "service_pack",
"name": "16.5.3",
"product": {
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},
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},
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},
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},
{
"category": "service_pack",
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}
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{
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},
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},
{
"category": "service_pack",
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"name": "16.10"
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{
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},
{
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},
{
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},
{
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{
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{
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],
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{
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{
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},
{
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},
{
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],
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{
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{
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},
{
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}
],
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"name": "17.7"
}
],
"category": "product_family",
"name": "Cisco IOS XE Software"
},
{
"category": "product_family",
"name": "Cisco IOS XE Software",
"product": {
"name": "Cisco IOS XE Software ",
"product_id": "CSAFPID-93036"
}
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2022-20915",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCwa41184"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
"known_affected": [
"CSAFPID-210081",
"CSAFPID-212411",
"CSAFPID-212412",
"CSAFPID-213477",
"CSAFPID-213478",
"CSAFPID-213778",
"CSAFPID-213779",
"CSAFPID-213809",
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-217234",
"CSAFPID-217253",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217257",
"CSAFPID-217259",
"CSAFPID-217265",
"CSAFPID-217268",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220802",
"CSAFPID-220993",
"CSAFPID-222257",
"CSAFPID-222693",
"CSAFPID-222694",
"CSAFPID-222711",
"CSAFPID-222925",
"CSAFPID-222942",
"CSAFPID-223252",
"CSAFPID-224702",
"CSAFPID-225099",
"CSAFPID-225466",
"CSAFPID-225832",
"CSAFPID-225856",
"CSAFPID-225858",
"CSAFPID-226330",
"CSAFPID-227556",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-228690",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-229187",
"CSAFPID-230303",
"CSAFPID-231390",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-232008",
"CSAFPID-232461",
"CSAFPID-233141",
"CSAFPID-233155",
"CSAFPID-233447",
"CSAFPID-236834",
"CSAFPID-236837",
"CSAFPID-238937",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-244070",
"CSAFPID-244071",
"CSAFPID-244530",
"CSAFPID-244912",
"CSAFPID-245375",
"CSAFPID-245377",
"CSAFPID-250629",
"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-251225",
"CSAFPID-252045",
"CSAFPID-252271",
"CSAFPID-252272",
"CSAFPID-252913",
"CSAFPID-252914",
"CSAFPID-257955",
"CSAFPID-257984",
"CSAFPID-258170",
"CSAFPID-258406",
"CSAFPID-260917",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-262588",
"CSAFPID-262590",
"CSAFPID-262592",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-267110",
"CSAFPID-267605",
"CSAFPID-270097",
"CSAFPID-271798",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273563",
"CSAFPID-274818",
"CSAFPID-275538",
"CSAFPID-277099",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277338",
"CSAFPID-277348",
"CSAFPID-277357",
"CSAFPID-277945",
"CSAFPID-278002",
"CSAFPID-278019",
"CSAFPID-278020",
"CSAFPID-278032",
"CSAFPID-278402",
"CSAFPID-278504",
"CSAFPID-279338",
"CSAFPID-280463",
"CSAFPID-280555",
"CSAFPID-280651",
"CSAFPID-280652",
"CSAFPID-280770",
"CSAFPID-280800",
"CSAFPID-280801",
"CSAFPID-280899",
"CSAFPID-280937",
"CSAFPID-280938",
"CSAFPID-280939",
"CSAFPID-282028",
"CSAFPID-282046",
"CSAFPID-282115",
"CSAFPID-282117",
"CSAFPID-283835",
"CSAFPID-284178",
"CSAFPID-284179",
"CSAFPID-285329",
"CSAFPID-286031",
"CSAFPID-290562",
"CSAFPID-93036"
]
},
"release_date": "2022-09-28T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
"product_ids": [
"CSAFPID-210081",
"CSAFPID-212411",
"CSAFPID-212412",
"CSAFPID-213477",
"CSAFPID-213478",
"CSAFPID-213778",
"CSAFPID-213779",
"CSAFPID-213809",
"CSAFPID-213960",
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var-202209-1915
Vulnerability from variot
A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition. Cisco Systems Cisco IOS XE Exists in an interpretation conflict vulnerability.Service operation interruption (DoS) It may be in a state. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability. This advisory is available at the following link:tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv This advisory is part of the September 2022 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2022 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication
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ghsa-xx9r-h2q8-q5m3
Vulnerability from github
Published
2022-10-11 12:00
Modified
2022-10-14 12:00
Severity ?
Details
A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.
{
"affected": [],
"aliases": [
"CVE-2022-20915"
],
"database_specific": {
"cwe_ids": [
"CWE-436"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-10T21:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling of an IPv6 packet that is forwarded from an MPLS and ZBFW-enabled interface in a 6VPE deployment. An attacker could exploit this vulnerability by sending a crafted IPv6 packet sourced from a device on the IPv6-enabled virtual routing and forwarding (VRF) interface through the affected device. A successful exploit could allow the attacker to reload the device, resulting in a DoS condition.",
"id": "GHSA-xx9r-h2q8-q5m3",
"modified": "2022-10-14T12:00:24Z",
"published": "2022-10-11T12:00:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20915"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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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.