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ID

VAR-202209-1915


CVE

CVE-2022-20915


TITLE

Cisco Systems  Cisco IOS XE  Interpretation Conflict in

Trust: 0.8

sources: JVNDB: JVNDB-2022-018913

DESCRIPTION

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

Trust: 1.8

sources: NVD: CVE-2022-20915 // JVNDB: JVNDB-2022-018913 // VULHUB: VHN-405468 // VULMON: CVE-2022-20915

AFFECTED PRODUCTS

vendor:ciscomodel:ios xescope:eqversion: -

Trust: 1.0

vendor:シスコシステムズmodel:cisco ios xescope:eqversion: -

Trust: 0.8

sources: JVNDB: JVNDB-2022-018913 // NVD: CVE-2022-20915

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2022-20915
value: HIGH

Trust: 1.0

ykramarz@cisco.com: CVE-2022-20915
value: HIGH

Trust: 1.0

NVD: CVE-2022-20915
value: HIGH

Trust: 0.8

CNNVD: CNNVD-202209-2873
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2022-20915
baseSeverity: HIGH
baseScore: 7.4
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 4.0
version: 3.1

Trust: 2.0

NVD: CVE-2022-20915
baseSeverity: HIGH
baseScore: 7.4
vectorString: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
attackVector: ADJACENT NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: JVNDB: JVNDB-2022-018913 // CNNVD: CNNVD-202209-2873 // NVD: CVE-2022-20915 // NVD: CVE-2022-20915

PROBLEMTYPE DATA

problemtype:CWE-436

Trust: 1.1

problemtype:CWE-115

Trust: 1.0

problemtype:Interpretation conflict (CWE-436) [NVD evaluation ]

Trust: 0.8

sources: VULHUB: VHN-405468 // JVNDB: JVNDB-2022-018913 // NVD: CVE-2022-20915

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202209-2873

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202209-2873

PATCH

title:cisco-sa-iosxe-6vpe-dos-tJBtf5Zvurl:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-6vpe-dos-tJBtf5Zv

Trust: 0.8

title:Cisco IOS XE Software Security vulnerabilitiesurl:http://123.124.177.30/web/xxk/bdxqById.tag?id=209331

Trust: 0.6

title:Cisco: Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerabilityurl:https://vulmon.com/vendoradvisory?qidtp=cisco_security_advisories_and_alerts_ciscoproducts&qid=cisco-sa-iosxe-6vpe-dos-tJBtf5Zv

Trust: 0.1

sources: VULMON: CVE-2022-20915 // JVNDB: JVNDB-2022-018913 // CNNVD: CNNVD-202209-2873

EXTERNAL IDS

db:NVDid:CVE-2022-20915

Trust: 3.4

db:JVNDBid:JVNDB-2022-018913

Trust: 0.8

db:AUSCERTid:ESB-2022.4818

Trust: 0.6

db:CNNVDid:CNNVD-202209-2873

Trust: 0.6

db:VULHUBid:VHN-405468

Trust: 0.1

db:VULMONid:CVE-2022-20915

Trust: 0.1

sources: VULHUB: VHN-405468 // VULMON: CVE-2022-20915 // JVNDB: JVNDB-2022-018913 // CNNVD: CNNVD-202209-2873 // NVD: CVE-2022-20915

REFERENCES

url:https://tools.cisco.com/security/center/content/ciscosecurityadvisory/cisco-sa-iosxe-6vpe-dos-tjbtf5zv

Trust: 2.4

url:https://nvd.nist.gov/vuln/detail/cve-2022-20915

Trust: 0.8

url:https://vigilance.fr/vulnerability/cisco-ios-xe-denial-of-service-via-ipv6-vpn-over-mpls-39400

Trust: 0.6

url:https://cxsecurity.com/cveshow/cve-2022-20915/

Trust: 0.6

url:https://www.auscert.org.au/bulletins/esb-2022.4818

Trust: 0.6

sources: VULHUB: VHN-405468 // VULMON: CVE-2022-20915 // JVNDB: JVNDB-2022-018913 // CNNVD: CNNVD-202209-2873 // NVD: CVE-2022-20915

SOURCES

db:VULHUBid:VHN-405468
db:VULMONid:CVE-2022-20915
db:JVNDBid:JVNDB-2022-018913
db:CNNVDid:CNNVD-202209-2873
db:NVDid:CVE-2022-20915

LAST UPDATE DATE

2024-08-14T14:49:33.678000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-405468date:2022-10-13T00:00:00
db:JVNDBid:JVNDB-2022-018913date:2023-10-24T00:48:00
db:CNNVDid:CNNVD-202209-2873date:2022-10-14T00:00:00
db:NVDid:CVE-2022-20915date:2023-11-07T03:43:19.040

SOURCES RELEASE DATE

db:VULHUBid:VHN-405468date:2022-10-10T00:00:00
db:JVNDBid:JVNDB-2022-018913date:2023-10-24T00:00:00
db:CNNVDid:CNNVD-202209-2873date:2022-09-28T00:00:00
db:NVDid:CVE-2022-20915date:2022-10-10T21:15:10.340