cisco-sa-sdwan-clipriv-9to2qgvp
Vulnerability from csaf_cisco
Published
2021-03-24 16:00
Modified
2021-03-24 16:00
Summary
Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability
Notes
Summary
A vulnerability in CLI management in Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system as the root user.
This vulnerability is due to the way the software handles concurrent CLI sessions. An attacker could exploit this vulnerability by authenticating to the device as an administrative user and executing a sequence of commands. A successful exploit could allow the attacker to obtain access to the underlying operating system as the root user.
Cisco has released software updates that address this vulnerability. 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-sdwan-clipriv-9TO2QGVp ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-clipriv-9TO2QGVp"]
Vulnerable Products
At the time of publication, this vulnerability affected universal Cisco IOS XE Software earlier than the first fixed release if it was running in Controller mode.
At the time of publication, this vulnerability affected all standalone Cisco IOS XE SD-WAN Software releases earlier than the first fixed release.
Note: The standalone Cisco IOS XE SD-WAN release images are separate from the universal Cisco IOS XE Software releases. The SD-WAN feature set was first integrated into the universal Cisco IOS XE Software releases starting with IOS XE Software Release 17.2.1r. For additional information, see the Install and Upgrade Cisco IOS XE Release 17.2.1r and Later ["https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/install-upgrade-17-2-later.html"] chapter of the Cisco SD-WAN Getting Started Guide.
For additional information about which Cisco software releases are vulnerable, 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 confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XE Software in autonomous mode
SD-WAN vBond Orchestrator Software
SD-WAN vEdge Routers
SD-WAN vManage Software
SD-WAN vSmart Controller 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 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.
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"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”).
Customers can use the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to search advisories in the following ways:
Choose the software and one or more releases
Upload a .txt file that includes a list of specific releases
Enter the output of the show version command
After initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.
Customers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S:
By default, the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.
Standalone Cisco IOS XE SD-WAN Software
At the time of publication, standalone Cisco IOS XE SD-WAN Software releases 16.12(5) and later contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
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 by Daemon Yang of Cisco 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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"text": "A vulnerability in CLI management in Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system as the root user.\r\n\r\nThis vulnerability is due to the way the software handles concurrent CLI sessions. An attacker could exploit this vulnerability by authenticating to the device as an administrative user and executing a sequence of commands. A successful exploit could allow the attacker to obtain access to the underlying operating system as the root user.\r\n\r\nCisco has released software updates that address this vulnerability. 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-sdwan-clipriv-9TO2QGVp [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-clipriv-9TO2QGVp\"]",
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"title": "Fixed Software"
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"text": "This vulnerability was found by Daemon Yang of Cisco during internal security testing.",
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"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.",
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{
"category": "service_pack",
"name": "17.2.1",
"product": {
"name": "17.2.1",
"product_id": "CSAFPID-251225"
}
},
{
"category": "service_pack",
"name": "17.2.1r",
"product": {
"name": "17.2.1r",
"product_id": "CSAFPID-277194"
}
},
{
"category": "service_pack",
"name": "17.2.1a",
"product": {
"name": "17.2.1a",
"product_id": "CSAFPID-277343"
}
},
{
"category": "service_pack",
"name": "17.2.1v",
"product": {
"name": "17.2.1v",
"product_id": "CSAFPID-278002"
}
},
{
"category": "service_pack",
"name": "17.2.2",
"product": {
"name": "17.2.2",
"product_id": "CSAFPID-278504"
}
}
],
"category": "product_version",
"name": "17.2"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.3.1",
"product": {
"name": "17.3.1",
"product_id": "CSAFPID-254712"
}
},
{
"category": "service_pack",
"name": "17.3.2",
"product": {
"name": "17.3.2",
"product_id": "CSAFPID-277099"
}
},
{
"category": "service_pack",
"name": "17.3.1a",
"product": {
"name": "17.3.1a",
"product_id": "CSAFPID-279338"
}
},
{
"category": "service_pack",
"name": "17.3.1w",
"product": {
"name": "17.3.1w",
"product_id": "CSAFPID-279339"
}
},
{
"category": "service_pack",
"name": "17.3.2a",
"product": {
"name": "17.3.2a",
"product_id": "CSAFPID-280555"
}
}
],
"category": "product_version",
"name": "17.3"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.4.1",
"product": {
"name": "17.4.1",
"product_id": "CSAFPID-262588"
}
},
{
"category": "service_pack",
"name": "17.4.1a",
"product": {
"name": "17.4.1a",
"product_id": "CSAFPID-280770"
}
},
{
"category": "service_pack",
"name": "17.4.1b",
"product": {
"name": "17.4.1b",
"product_id": "CSAFPID-280899"
}
}
],
"category": "product_version",
"name": "17.4"
}
],
"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": "product_family",
"name": "Cisco IOS XE SD-WAN Software",
"product": {
"name": "Cisco IOS XE SD-WAN Software ",
"product_id": "CSAFPID-275036"
}
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-1281",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCvv65659"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
"known_affected": [
"CSAFPID-275036",
"CSAFPID-225856",
"CSAFPID-225858",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-232008",
"CSAFPID-245377",
"CSAFPID-250629",
"CSAFPID-251075",
"CSAFPID-251225",
"CSAFPID-252045",
"CSAFPID-252271",
"CSAFPID-252913",
"CSAFPID-254688",
"CSAFPID-254712",
"CSAFPID-257955",
"CSAFPID-258900",
"CSAFPID-260741",
"CSAFPID-260917",
"CSAFPID-261240",
"CSAFPID-261465",
"CSAFPID-262390",
"CSAFPID-262588",
"CSAFPID-262595",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-266259",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-277099",
"CSAFPID-277147",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-278002",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-280555",
"CSAFPID-280652",
"CSAFPID-280770",
"CSAFPID-280899",
"CSAFPID-283763",
"CSAFPID-93036"
]
},
"release_date": "2021-03-24T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
"product_ids": [
"CSAFPID-275036",
"CSAFPID-225856",
"CSAFPID-225858",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-232008",
"CSAFPID-245377",
"CSAFPID-250629",
"CSAFPID-251075",
"CSAFPID-251225",
"CSAFPID-252045",
"CSAFPID-252271",
"CSAFPID-252913",
"CSAFPID-254688",
"CSAFPID-254712",
"CSAFPID-257955",
"CSAFPID-258900",
"CSAFPID-260741",
"CSAFPID-260917",
"CSAFPID-261240",
"CSAFPID-261465",
"CSAFPID-262390",
"CSAFPID-262588",
"CSAFPID-262595",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-266259",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-277099",
"CSAFPID-277147",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-278002",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-280555",
"CSAFPID-280652",
"CSAFPID-280770",
"CSAFPID-280899",
"CSAFPID-283763",
"CSAFPID-93036"
],
"url": "https://software.cisco.com"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N",
"version": "3.1"
},
"products": [
"CSAFPID-275036",
"CSAFPID-225856",
"CSAFPID-225858",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-232008",
"CSAFPID-245377",
"CSAFPID-250629",
"CSAFPID-251075",
"CSAFPID-251225",
"CSAFPID-252045",
"CSAFPID-252271",
"CSAFPID-252913",
"CSAFPID-254688",
"CSAFPID-254712",
"CSAFPID-257955",
"CSAFPID-258900",
"CSAFPID-260741",
"CSAFPID-260917",
"CSAFPID-261240",
"CSAFPID-261465",
"CSAFPID-262390",
"CSAFPID-262588",
"CSAFPID-262595",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-266259",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-277099",
"CSAFPID-277147",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-278002",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-280555",
"CSAFPID-280652",
"CSAFPID-280770",
"CSAFPID-280899",
"CSAFPID-283763",
"CSAFPID-93036"
]
}
],
"title": "Cisco IOS XE SD-WAN Software Privilege Escalation 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.