cisco-sa-cat3k-dos-zza4gb3r
Vulnerability from csaf_cisco
Published
2023-09-27 16:00
Modified
2023-09-27 16:00
Summary
Cisco IOS XE Software for Catalyst 3650 and Catalyst 3850 Series Switches Denial of Service Vulnerability
Notes
Summary
A vulnerability in Cisco IOS XE Software for Cisco Catalyst 3650 and Catalyst 3850 Series Switches could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition.
This vulnerability is due to improper resource management when processing traffic that is received on the management interface. An attacker could exploit this vulnerability by sending a high rate of traffic to the management interface. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is part of the September 2023 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 2023 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74916"].
Vulnerable Products
This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco IOS XE Software and have the management interface enabled:
Catalyst 3650 Series Switches
Catalyst 3850 Series Switches
For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
Determine the Device Configuration
To determine whether a device has the management interface enabled, use the show running-config interface GigabitEthernet 0/0 CLI command. If shutdown is not returned, then the interface is enabled, as shown in the following example:
Switch#show running-config interface GigabitEthernet 0/0
!
interface GigabitEthernet0/0
vrf forwarding Mgmt-vrf
ip address 10.1.1.1 255.255.255.0
negotiation auto
end
Products Confirmed Not Vulnerable
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XE devices not listed in Vulnerable Products
IOS XR Software
Meraki products
NX-OS Software
Workarounds
There are no workarounds that address this vulnerability.
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 ["http://www.cisco.com/web/about/security/psirt/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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"text": "A vulnerability in Cisco IOS XE Software for Cisco Catalyst 3650 and Catalyst 3850 Series Switches could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper resource management when processing traffic that is received on the management interface. An attacker could exploit this vulnerability by sending a high rate of traffic to the management interface. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the September 2023 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 2023 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74916\"].",
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"text": "This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco IOS XE Software and have the management interface enabled:\r\n\r\nCatalyst 3650 Series Switches\r\nCatalyst 3850 Series Switches\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\nTo determine whether a device has the management interface enabled, use the show running-config interface GigabitEthernet 0/0 CLI command. If shutdown is not returned, then the interface is enabled, as shown in the following example:\r\n\r\n\r\nSwitch#show running-config interface GigabitEthernet 0/0\r\n!\r\ninterface GigabitEthernet0/0\r\n vrf forwarding Mgmt-vrf\r\n ip address 10.1.1.1 255.255.255.0\r\n negotiation auto\r\nend",
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"text": "This vulnerability was found during the resolution of a Cisco TAC support case.",
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"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.",
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"product_id": "CSAFPID-271798"
}
},
{
"category": "service_pack",
"name": "16.9.6",
"product": {
"name": "16.9.6",
"product_id": "CSAFPID-277945"
}
},
{
"category": "service_pack",
"name": "16.9.7",
"product": {
"name": "16.9.7",
"product_id": "CSAFPID-280651"
}
},
{
"category": "service_pack",
"name": "16.9.8",
"product": {
"name": "16.9.8",
"product_id": "CSAFPID-280938"
}
}
],
"category": "product_version",
"name": "16.9"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.11.1",
"product": {
"name": "16.11.1",
"product_id": "CSAFPID-227918"
}
},
{
"category": "service_pack",
"name": "16.11.2",
"product": {
"name": "16.11.2",
"product_id": "CSAFPID-261240"
}
},
{
"category": "service_pack",
"name": "16.11.1s",
"product": {
"name": "16.11.1s",
"product_id": "CSAFPID-261465"
}
},
{
"category": "service_pack",
"name": "16.11.1c",
"product": {
"name": "16.11.1c",
"product_id": "CSAFPID-264096"
}
}
],
"category": "product_version",
"name": "16.11"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.12.1",
"product": {
"name": "16.12.1",
"product_id": "CSAFPID-227920"
}
},
{
"category": "service_pack",
"name": "16.12.1s",
"product": {
"name": "16.12.1s",
"product_id": "CSAFPID-265735"
}
},
{
"category": "service_pack",
"name": "16.12.2",
"product": {
"name": "16.12.2",
"product_id": "CSAFPID-267605"
}
},
{
"category": "service_pack",
"name": "16.12.3",
"product": {
"name": "16.12.3",
"product_id": "CSAFPID-273445"
}
},
{
"category": "service_pack",
"name": "16.12.8",
"product": {
"name": "16.12.8",
"product_id": "CSAFPID-273448"
}
},
{
"category": "service_pack",
"name": "16.12.4",
"product": {
"name": "16.12.4",
"product_id": "CSAFPID-277147"
}
},
{
"category": "service_pack",
"name": "16.12.3s",
"product": {
"name": "16.12.3s",
"product_id": "CSAFPID-277255"
}
},
{
"category": "service_pack",
"name": "16.12.3a",
"product": {
"name": "16.12.3a",
"product_id": "CSAFPID-277321"
}
},
{
"category": "service_pack",
"name": "16.12.5",
"product": {
"name": "16.12.5",
"product_id": "CSAFPID-280463"
}
},
{
"category": "service_pack",
"name": "16.12.6",
"product": {
"name": "16.12.6",
"product_id": "CSAFPID-280937"
}
},
{
"category": "service_pack",
"name": "16.12.5b",
"product": {
"name": "16.12.5b",
"product_id": "CSAFPID-281654"
}
},
{
"category": "service_pack",
"name": "16.12.6a",
"product": {
"name": "16.12.6a",
"product_id": "CSAFPID-285325"
}
},
{
"category": "service_pack",
"name": "16.12.7",
"product": {
"name": "16.12.7",
"product_id": "CSAFPID-286031"
}
},
{
"category": "service_pack",
"name": "16.12.9",
"product": {
"name": "16.12.9",
"product_id": "CSAFPID-292510"
}
}
],
"category": "product_version",
"name": "16.12"
}
],
"category": "product_family",
"name": "Cisco IOS XE Software"
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2023-20033",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCwe60256"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
"known_affected": [
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217259",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220802",
"CSAFPID-222711",
"CSAFPID-225784",
"CSAFPID-225856",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-231187",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-232008",
"CSAFPID-233155",
"CSAFPID-235307",
"CSAFPID-236834",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-244530",
"CSAFPID-244900",
"CSAFPID-247629",
"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-252272",
"CSAFPID-252914",
"CSAFPID-261240",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-263804",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-267605",
"CSAFPID-271798",
"CSAFPID-273445",
"CSAFPID-273448",
"CSAFPID-273563",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277255",
"CSAFPID-277321",
"CSAFPID-277945",
"CSAFPID-278402",
"CSAFPID-280463",
"CSAFPID-280651",
"CSAFPID-280801",
"CSAFPID-280937",
"CSAFPID-280938",
"CSAFPID-281654",
"CSAFPID-283835",
"CSAFPID-285325",
"CSAFPID-286031",
"CSAFPID-292510"
]
},
"release_date": "2023-09-27T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
"product_ids": [
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217259",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220802",
"CSAFPID-222711",
"CSAFPID-225784",
"CSAFPID-225856",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-231187",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-232008",
"CSAFPID-233155",
"CSAFPID-235307",
"CSAFPID-236834",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-244530",
"CSAFPID-244900",
"CSAFPID-247629",
"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-252272",
"CSAFPID-252914",
"CSAFPID-261240",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-263804",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-267605",
"CSAFPID-271798",
"CSAFPID-273445",
"CSAFPID-273448",
"CSAFPID-273563",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277255",
"CSAFPID-277321",
"CSAFPID-277945",
"CSAFPID-278402",
"CSAFPID-280463",
"CSAFPID-280651",
"CSAFPID-280801",
"CSAFPID-280937",
"CSAFPID-280938",
"CSAFPID-281654",
"CSAFPID-283835",
"CSAFPID-285325",
"CSAFPID-286031",
"CSAFPID-292510"
],
"url": "https://software.cisco.com"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.6,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217259",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220802",
"CSAFPID-222711",
"CSAFPID-225784",
"CSAFPID-225856",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-231187",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-232008",
"CSAFPID-233155",
"CSAFPID-235307",
"CSAFPID-236834",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-244530",
"CSAFPID-244900",
"CSAFPID-247629",
"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-252272",
"CSAFPID-252914",
"CSAFPID-261240",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-263804",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-267605",
"CSAFPID-271798",
"CSAFPID-273445",
"CSAFPID-273448",
"CSAFPID-273563",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277255",
"CSAFPID-277321",
"CSAFPID-277945",
"CSAFPID-278402",
"CSAFPID-280463",
"CSAFPID-280651",
"CSAFPID-280801",
"CSAFPID-280937",
"CSAFPID-280938",
"CSAFPID-281654",
"CSAFPID-283835",
"CSAFPID-285325",
"CSAFPID-286031",
"CSAFPID-292510"
]
}
],
"title": "Cisco IOS XE Software for Catalyst 3650 and Catalyst 3850 Switches Denial of Service 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.