cisco-sa-20190515-nxos-bash-bypass
Vulnerability from csaf_cisco
Published
2019-05-15 16:00
Modified
2019-05-20 14:00
Summary
Cisco NX-OS Software Bash Bypass Guest Shell Vulnerability
Notes
Summary
A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to bypass the limited command set of the restricted Guest Shell and execute commands at the privilege level of a network-admin user outside of the Guest Shell. The attacker must authenticate with valid administrator device credentials.
The vulnerability is due to the incorrect implementation of a CLI command that allows a Bash command to be incorrectly invoked on the Guest Shell CLI. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Guest Shell prompt. A successful exploit could allow the attacker to issue commands that should be restricted by a Guest Shell account.
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-20190515-nxos-bash-bypass ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-bash-bypass"]
Vulnerable Products
This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco NX-OS Software:
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 3600 Platform Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Switching Platform
For information about which Cisco NX-OS Software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
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:
Firepower 2100 Series
Firepower 4100 Series
Firepower 9300 Security Appliances
MDS 9000 Series Multilayer Switches
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
In addition to the NX-OS CLI, Cisco NX-OS Software can support access to the Bash shell, which interprets commands that a user enters or that are read from a shell script. Bash enables access to and is used to manage the underlying Linux system on the device. In Cisco NX-OS Software, the Bash shell is accessible from user accounts that are associated with the Cisco NX-OS dev-ops role or the Cisco NX-OS network-admin role.
For additional information, customers can refer to the Bash chapter ["https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/programmability/guide/b_Cisco_Nexus_9000_Series_NX-OS_Programmability_Guide_7x/Bash.html"] of the Cisco NX-OS Programmability Guide.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
Cisco has released free software updates that address the vulnerability described in this advisory. 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.
When considering software upgrades, 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.
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.
Fixed Releases
No upgrade action is necessary for customers who have already applied a recommended release to address the March 2019 Cisco FXOS and NX-OS Software bundle. See Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-70757"] for a list of advisories in the bundle.
Customers who have not applied a recommended release to address the March 2019 bundle are advised to upgrade to an appropriate release ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"] as indicated in the applicable table in this section. In the following tables, the left column lists Cisco NX-OS Software releases. The right column indicates the first release that includes the fix for this vulnerability.
Nexus 3000 Series Switches, Nexus 3500 Platform Switches, and Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvh76090 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvh76090"]
Cisco NX-OS Software Release First Fixed Release for This Vulnerability
Prior to 7.0(3)I2
Not vulnerable
7.0(3)I4
7.0(3)I4(9)
7.0(3)I7 7.0(3)I7(4) 9.2(1) Not vulnerable
Nexus 3600 Platform Switches and Nexus 9500 R-Series Switching Platform: CSCvj01497 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj01497"]
Cisco NX-OS Software Release First Fixed Release for This Vulnerability
7.0(3)
7.0(3)F3(5) 9.2 Not vulnerable
Nexus 7000 and 7700 Series Switches: CSCvj01472 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj01472"]
Cisco NX-OS Software Release First Fixed Release for This Vulnerability
Prior to 6.2
Not vulnerable
6.2 Not vulnerable 7.2 Not vulnerable 7.3 Not vulnerable 8.0 Not vulnerable 8.1 8.2(3) 8.2 8.2(3) 8.3 8.3(1)
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco Nexus Switch, administrators can refer to the following Recommended Releases documents. If a security advisory recommends a later release, Cisco recommends following the advisory guidance.
Cisco MDS Series Switches ["https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/b_MDS_NX-OS_Recommended_Releases.html"]
Cisco Nexus 1000V for VMware Switch ["http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/recommended_releases/b_Cisco_N1KV_VMware_MinRecommendedReleases.html"]
Cisco Nexus 3000 Series and 3500 Series Switches ["http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3000/sw/recommended_release/b_Minimum_and_Recommended_Cisco_NX-OS_Releases_for_Cisco_Nexus_3000_Series_Switches.html"]
Cisco Nexus 5000 Series Switches ["http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/release/recommended_releases/recommended_nx-os_releases.html"]
Cisco Nexus 5500 Platform Switches ["http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5500/sw/release/recommended_releases/n5500_recommended_nx-os_releases.html"]
Cisco Nexus 6000 Series Switches ["http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus6000/sw/release/recommended_releases/recommended_nx-os_releases.html"]
Cisco Nexus 7000 Series Switches ["http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nx-os/recommended_releases/recommended_nx-os_releases.html"]
Cisco Nexus 9000 Series Switches ["http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/recommended_release/b_Minimum_and_Recommended_Cisco_NX-OS_Releases_for_Cisco_Nexus_9000_Series_Switches.html"]
Cisco Nexus 9000 Series ACI-Mode Switches ["https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/recommended-release/b_Recommended_Cisco_ACI_Releases.html"]
For help determining the best Cisco NX-OS Software release for Cisco UCS, refer to the Recommended Releases documents in the release notes for the device.
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.
{
"document": {
"acknowledgments": [
{
"summary": "This vulnerability was found during internal security testing."
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"notes": [
{
"category": "summary",
"text": "A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to bypass the limited command set of the restricted Guest Shell and execute commands at the privilege level of a network-admin user outside of the Guest Shell. The attacker must authenticate with valid administrator device credentials.\r\n\r\nThe vulnerability is due to the incorrect implementation of a CLI command that allows a Bash command to be incorrectly invoked on the Guest Shell CLI. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Guest Shell prompt. A successful exploit could allow the attacker to issue commands that should be restricted by a Guest Shell account.\r\n\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-20190515-nxos-bash-bypass [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-bash-bypass\"]",
"title": "Summary"
},
{
"category": "general",
"text": "This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco NX-OS Software:\r\n\r\nNexus 3000 Series Switches\r\nNexus 3500 Platform Switches\r\nNexus 3600 Platform Switches\r\nNexus 7000 Series Switches\r\nNexus 7700 Series Switches\r\nNexus 9000 Series Switches in standalone NX-OS mode\r\nNexus 9500 R-Series Switching Platform\r\n\r\nFor information about which Cisco NX-OS Software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.",
"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\nFirepower 2100 Series\r\nFirepower 4100 Series\r\nFirepower 9300 Security Appliances\r\nMDS 9000 Series Multilayer Switches\r\nNexus 1000V Switch for Microsoft Hyper-V\r\nNexus 1000V Switch for VMware vSphere\r\nNexus 5500 Platform Switches\r\nNexus 5600 Platform Switches\r\nNexus 6000 Series Switches\r\nNexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode\r\nUCS 6200 Series Fabric Interconnects\r\nUCS 6300 Series Fabric Interconnects\r\nUCS 6400 Series Fabric Interconnects",
"title": "Products Confirmed Not Vulnerable"
},
{
"category": "general",
"text": "In addition to the NX-OS CLI, Cisco NX-OS Software can support access to the Bash shell, which interprets commands that a user enters or that are read from a shell script. Bash enables access to and is used to manage the underlying Linux system on the device. In Cisco NX-OS Software, the Bash shell is accessible from user accounts that are associated with the Cisco NX-OS dev-ops role or the Cisco NX-OS network-admin role.\r\n\r\nFor additional information, customers can refer to the Bash chapter [\"https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/programmability/guide/b_Cisco_Nexus_9000_Series_NX-OS_Programmability_Guide_7x/Bash.html\"] of the Cisco NX-OS Programmability Guide.",
"title": "Details"
},
{
"category": "general",
"text": "There are no workarounds that address this vulnerability.",
"title": "Workarounds"
},
{
"category": "general",
"text": "Cisco has released free software updates that address the vulnerability described in this advisory. 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\"]\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\nWhen considering software upgrades, 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 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 Fixed Releases\r\n\r\nNo upgrade action is necessary for customers who have already applied a recommended release to address the March 2019 Cisco FXOS and NX-OS Software bundle. See Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-70757\"] for a list of advisories in the bundle.\r\n\r\nCustomers who have not applied a recommended release to address the March 2019 bundle are advised to upgrade to an appropriate release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in the applicable table in this section. In the following tables, the left column lists Cisco NX-OS Software releases. The right column indicates the first release that includes the fix for this vulnerability.\r\n\r\n\r\nNexus 3000 Series Switches, Nexus 3500 Platform Switches, and Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvh76090 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvh76090\"]\r\n Cisco NX-OS Software Release First Fixed Release for This Vulnerability\r\n Prior to 7.0(3)I2\r\n Not vulnerable\r\n 7.0(3)I4\r\n 7.0(3)I4(9)\r\n 7.0(3)I7 7.0(3)I7(4) 9.2(1) Not vulnerable\r\n\r\nNexus 3600 Platform Switches and Nexus 9500 R-Series Switching Platform: CSCvj01497 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj01497\"]\r\n Cisco NX-OS Software Release First Fixed Release for This Vulnerability\r\n 7.0(3)\r\n 7.0(3)F3(5) 9.2 Not vulnerable\r\n\r\n Nexus 7000 and 7700 Series Switches: CSCvj01472 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj01472\"]\r\n Cisco NX-OS Software Release First Fixed Release for This Vulnerability\r\n Prior to 6.2\r\n Not vulnerable\r\n 6.2 Not vulnerable 7.2 Not vulnerable 7.3 Not vulnerable 8.0 Not vulnerable 8.1 8.2(3) 8.2 8.2(3) 8.3 8.3(1)\r\n\r\nAdditional Resources\r\nFor help determining the best Cisco NX-OS Software release for a Cisco Nexus Switch, administrators can refer to the following Recommended Releases documents. If a security advisory recommends a later release, Cisco recommends following the advisory guidance.\r\n\r\n\r\nCisco MDS Series Switches [\"https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/b_MDS_NX-OS_Recommended_Releases.html\"]\r\nCisco Nexus 1000V for VMware Switch [\"http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/recommended_releases/b_Cisco_N1KV_VMware_MinRecommendedReleases.html\"]\r\nCisco Nexus 3000 Series and 3500 Series Switches [\"http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3000/sw/recommended_release/b_Minimum_and_Recommended_Cisco_NX-OS_Releases_for_Cisco_Nexus_3000_Series_Switches.html\"]\r\nCisco Nexus 5000 Series Switches [\"http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/release/recommended_releases/recommended_nx-os_releases.html\"]\r\nCisco Nexus 5500 Platform Switches [\"http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5500/sw/release/recommended_releases/n5500_recommended_nx-os_releases.html\"]\r\nCisco Nexus 6000 Series Switches [\"http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus6000/sw/release/recommended_releases/recommended_nx-os_releases.html\"]\r\nCisco Nexus 7000 Series Switches [\"http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nx-os/recommended_releases/recommended_nx-os_releases.html\"]\r\nCisco Nexus 9000 Series Switches [\"http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/recommended_release/b_Minimum_and_Recommended_Cisco_NX-OS_Releases_for_Cisco_Nexus_9000_Series_Switches.html\"]\r\nCisco Nexus 9000 Series ACI-Mode Switches [\"https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/recommended-release/b_Recommended_Cisco_ACI_Releases.html\"]\r\n For help determining the best Cisco NX-OS Software release for Cisco UCS, refer to the Recommended Releases documents in the release notes for the device.",
"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"
},
"references": [
{
"category": "self",
"summary": "Cisco NX-OS Software Bash Bypass Guest Shell Vulnerability",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-bash-bypass"
},
{
"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-20190515-nxos-bash-bypass",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-bash-bypass"
},
{
"category": "external",
"summary": "Bash chapter",
"url": "https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/programmability/guide/b_Cisco_Nexus_9000_Series_NX-OS_Programmability_Guide_7x/Bash.html"
},
{
"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 Security Advisories and Alerts 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;Event Response: March 2019 Cisco\u0026nbsp;FXOS and NX-OS Software Security Advisory Bundled Publication",
"url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-70757"
},
{
"category": "external",
"summary": "upgrade to an appropriate release",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
},
{
"category": "external",
"summary": "CSCvh76090",
"url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvh76090"
},
{
"category": "external",
"summary": "CSCvj01497",
"url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj01497"
},
{
"category": "external",
"summary": "CSCvj01472",
"url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj01472"
},
{
"category": "external",
"summary": "Cisco MDS Series Switches",
"url": "https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/b_MDS_NX-OS_Recommended_Releases.html"
},
{
"category": "external",
"summary": "Cisco Nexus 1000V for VMware Switch",
"url": "http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/recommended_releases/b_Cisco_N1KV_VMware_MinRecommendedReleases.html"
},
{
"category": "external",
"summary": "Cisco Nexus 3000 Series and 3500 Series Switches",
"url": "http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3000/sw/recommended_release/b_Minimum_and_Recommended_Cisco_NX-OS_Releases_for_Cisco_Nexus_3000_Series_Switches.html"
},
{
"category": "external",
"summary": "Cisco Nexus 5000 Series Switches",
"url": "http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/release/recommended_releases/recommended_nx-os_releases.html"
},
{
"category": "external",
"summary": "Cisco Nexus 5500 Platform Switches",
"url": "http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5500/sw/release/recommended_releases/n5500_recommended_nx-os_releases.html"
},
{
"category": "external",
"summary": "Cisco Nexus 6000 Series Switches",
"url": "http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus6000/sw/release/recommended_releases/recommended_nx-os_releases.html"
},
{
"category": "external",
"summary": "Cisco Nexus 7000 Series Switches",
"url": "http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nx-os/recommended_releases/recommended_nx-os_releases.html"
},
{
"category": "external",
"summary": "Cisco Nexus 9000 Series Switches",
"url": "http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/recommended_release/b_Minimum_and_Recommended_Cisco_NX-OS_Releases_for_Cisco_Nexus_9000_Series_Switches.html"
},
{
"category": "external",
"summary": "Cisco Nexus 9000 Series ACI-Mode Switches",
"url": "https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/recommended-release/b_Recommended_Cisco_ACI_Releases.html"
},
{
"category": "external",
"summary": "Security Vulnerability Policy",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
}
],
"title": "Cisco NX-OS Software Bash Bypass Guest Shell Vulnerability",
"tracking": {
"current_release_date": "2019-05-20T14:00:47+00:00",
"generator": {
"date": "2022-09-03T02:59:19+00:00",
"engine": {
"name": "TVCE"
}
},
"id": "cisco-sa-20190515-nxos-bash-bypass",
"initial_release_date": "2019-05-15T16:00:00+00:00",
"revision_history": [
{
"date": "2019-05-14T20:38:40+00:00",
"number": "1.0.0",
"summary": "Initial public release."
},
{
"date": "2019-05-20T14:00:47+00:00",
"number": "1.1.0",
"summary": "Update the N7K fixed release table."
}
],
"status": "final",
"version": "1.1.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)",
"product": {
"name": "7.0(3)",
"product_id": "CSAFPID-208195"
}
}
],
"category": "product_version",
"name": "7.0"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(0)N1(1)",
"product": {
"name": "7.0(0)N1(1)",
"product_id": "CSAFPID-201884"
}
}
],
"category": "product_version",
"name": "7.0(0)N1"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(1)N1(1)",
"product": {
"name": "7.0(1)N1(1)",
"product_id": "CSAFPID-201885"
}
},
{
"category": "service_pack",
"name": "7.0(1)N1(3)",
"product": {
"name": "7.0(1)N1(3)",
"product_id": "CSAFPID-213631"
}
}
],
"category": "product_version",
"name": "7.0(1)N1"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(2)I2(2c)",
"product": {
"name": "7.0(2)I2(2c)",
"product_id": "CSAFPID-239460"
}
}
],
"category": "product_version",
"name": "7.0(2)I2"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(2)N1(1)",
"product": {
"name": "7.0(2)N1(1)",
"product_id": "CSAFPID-201886"
}
},
{
"category": "service_pack",
"name": "7.0(2)N1(1a)",
"product": {
"name": "7.0(2)N1(1a)",
"product_id": "CSAFPID-230508"
}
}
],
"category": "product_version",
"name": "7.0(2)N1"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)F1(1)",
"product": {
"name": "7.0(3)F1(1)",
"product_id": "CSAFPID-239805"
}
}
],
"category": "product_version",
"name": "7.0(3)F1"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)F2(1)",
"product": {
"name": "7.0(3)F2(1)",
"product_id": "CSAFPID-239806"
}
},
{
"category": "service_pack",
"name": "7.0(3)F2(2)",
"product": {
"name": "7.0(3)F2(2)",
"product_id": "CSAFPID-239807"
}
}
],
"category": "product_version",
"name": "7.0(3)F2"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)F3(1)",
"product": {
"name": "7.0(3)F3(1)",
"product_id": "CSAFPID-239632"
}
},
{
"category": "service_pack",
"name": "7.0(3)F3(2)",
"product": {
"name": "7.0(3)F3(2)",
"product_id": "CSAFPID-239633"
}
},
{
"category": "service_pack",
"name": "7.0(3)F3(3)",
"product": {
"name": "7.0(3)F3(3)",
"product_id": "CSAFPID-239634"
}
},
{
"category": "service_pack",
"name": "7.0(3)F3(3a)",
"product": {
"name": "7.0(3)F3(3a)",
"product_id": "CSAFPID-239635"
}
},
{
"category": "service_pack",
"name": "7.0(3)F3(4)",
"product": {
"name": "7.0(3)F3(4)",
"product_id": "CSAFPID-239636"
}
},
{
"category": "service_pack",
"name": "7.0(3)F3(3c)",
"product": {
"name": "7.0(3)F3(3c)",
"product_id": "CSAFPID-248790"
}
},
{
"category": "service_pack",
"name": "7.0(3)F3(3b)",
"product": {
"name": "7.0(3)F3(3b)",
"product_id": "CSAFPID-256141"
}
}
],
"category": "product_version",
"name": "7.0(3)F3"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)I1(1)",
"product": {
"name": "7.0(3)I1(1)",
"product_id": "CSAFPID-208580"
}
},
{
"category": "service_pack",
"name": "7.0(3)I1(1a)",
"product": {
"name": "7.0(3)I1(1a)",
"product_id": "CSAFPID-208581"
}
},
{
"category": "service_pack",
"name": "7.0(3)I1(1b)",
"product": {
"name": "7.0(3)I1(1b)",
"product_id": "CSAFPID-208582"
}
},
{
"category": "service_pack",
"name": "7.0(3)I1(2)",
"product": {
"name": "7.0(3)I1(2)",
"product_id": "CSAFPID-208583"
}
},
{
"category": "service_pack",
"name": "7.0(3)I1(3)",
"product": {
"name": "7.0(3)I1(3)",
"product_id": "CSAFPID-220738"
}
},
{
"category": "service_pack",
"name": "7.0(3)I1(3a)",
"product": {
"name": "7.0(3)I1(3a)",
"product_id": "CSAFPID-220739"
}
},
{
"category": "service_pack",
"name": "7.0(3)I1(3b)",
"product": {
"name": "7.0(3)I1(3b)",
"product_id": "CSAFPID-220740"
}
}
],
"category": "product_version",
"name": "7.0(3)I1"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)I2(2a)",
"product": {
"name": "7.0(3)I2(2a)",
"product_id": "CSAFPID-220741"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(2b)",
"product": {
"name": "7.0(3)I2(2b)",
"product_id": "CSAFPID-220742"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(2c)",
"product": {
"name": "7.0(3)I2(2c)",
"product_id": "CSAFPID-220743"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(2d)",
"product": {
"name": "7.0(3)I2(2d)",
"product_id": "CSAFPID-220744"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(2e)",
"product": {
"name": "7.0(3)I2(2e)",
"product_id": "CSAFPID-220745"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(3)",
"product": {
"name": "7.0(3)I2(3)",
"product_id": "CSAFPID-220746"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(4)",
"product": {
"name": "7.0(3)I2(4)",
"product_id": "CSAFPID-220747"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(5)",
"product": {
"name": "7.0(3)I2(5)",
"product_id": "CSAFPID-230554"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(1)",
"product": {
"name": "7.0(3)I2(1)",
"product_id": "CSAFPID-230567"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(1a)",
"product": {
"name": "7.0(3)I2(1a)",
"product_id": "CSAFPID-230568"
}
},
{
"category": "service_pack",
"name": "7.0(3)I2(2)",
"product": {
"name": "7.0(3)I2(2)",
"product_id": "CSAFPID-230569"
}
}
],
"category": "product_version",
"name": "7.0(3)I2"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)I3(1)",
"product": {
"name": "7.0(3)I3(1)",
"product_id": "CSAFPID-220748"
}
}
],
"category": "product_version",
"name": "7.0(3)I3"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)I4(1)",
"product": {
"name": "7.0(3)I4(1)",
"product_id": "CSAFPID-220749"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(2)",
"product": {
"name": "7.0(3)I4(2)",
"product_id": "CSAFPID-220750"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(3)",
"product": {
"name": "7.0(3)I4(3)",
"product_id": "CSAFPID-220751"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(4)",
"product": {
"name": "7.0(3)I4(4)",
"product_id": "CSAFPID-230530"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(5)",
"product": {
"name": "7.0(3)I4(5)",
"product_id": "CSAFPID-230531"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(6)",
"product": {
"name": "7.0(3)I4(6)",
"product_id": "CSAFPID-230532"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(7)",
"product": {
"name": "7.0(3)I4(7)",
"product_id": "CSAFPID-230534"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(8)",
"product": {
"name": "7.0(3)I4(8)",
"product_id": "CSAFPID-239472"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(8a)",
"product": {
"name": "7.0(3)I4(8a)",
"product_id": "CSAFPID-256872"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(8b)",
"product": {
"name": "7.0(3)I4(8b)",
"product_id": "CSAFPID-256873"
}
},
{
"category": "service_pack",
"name": "7.0(3)I4(8z)",
"product": {
"name": "7.0(3)I4(8z)",
"product_id": "CSAFPID-256874"
}
},
{
"category": "service_pack",
"name": "7.0(3)I7(5a)",
"product": {
"name": "7.0(3)I7(5a)",
"product_id": "CSAFPID-257394"
}
}
],
"category": "product_version",
"name": "7.0(3)I4"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)I5(1)",
"product": {
"name": "7.0(3)I5(1)",
"product_id": "CSAFPID-230535"
}
},
{
"category": "service_pack",
"name": "7.0(3)I5(2)",
"product": {
"name": "7.0(3)I5(2)",
"product_id": "CSAFPID-230536"
}
}
],
"category": "product_version",
"name": "7.0(3)I5"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)I6(1)",
"product": {
"name": "7.0(3)I6(1)",
"product_id": "CSAFPID-230541"
}
},
{
"category": "service_pack",
"name": "7.0(3)I6(2)",
"product": {
"name": "7.0(3)I6(2)",
"product_id": "CSAFPID-239476"
}
}
],
"category": "product_version",
"name": "7.0(3)I6"
},
{
"branches": [
{
"category": "service_pack",
"name": "7.0(3)I7(1)",
"product": {
"name": "7.0(3)I7(1)",
"product_id": "CSAFPID-230542"
}
},
{
"category": "service_pack",
"name": "7.0(3)I7(2)",
"product": {
"name": "7.0(3)I7(2)",
"product_id": "CSAFPID-239478"
}
},
{
"category": "service_pack",
"name": "7.0(3)I7(3)",
"product": {
"name": "7.0(3)I7(3)",
"product_id": "CSAFPID-239479"
}
},
{
"category": "service_pack",
"name": "7.0(3)I7(5a)",
"product": {
"name": "7.0(3)I7(5a)",
"product_id": "CSAFPID-256875"
}
}
],
"category": "product_version",
"name": "7.0(3)I7"
}
],
"category": "product_family",
"name": "Cisco NX-OS Software"
},
{
"category": "product_family",
"name": "Cisco NX-OS Software",
"product": {
"name": "Cisco NX-OS Software ",
"product_id": "CSAFPID-80720"
}
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2019-1730",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCvh76090"
},
{
"system_name": "Cisco Bug ID",
"text": "CSCvj01472"
},
{
"system_name": "Cisco Bug ID",
"text": "CSCvj01497"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
"known_affected": [
"CSAFPID-201884",
"CSAFPID-201885",
"CSAFPID-201886",
"CSAFPID-208195",
"CSAFPID-208580",
"CSAFPID-208581",
"CSAFPID-208582",
"CSAFPID-208583",
"CSAFPID-213631",
"CSAFPID-220738",
"CSAFPID-220739",
"CSAFPID-220740",
"CSAFPID-220741",
"CSAFPID-220742",
"CSAFPID-220743",
"CSAFPID-220744",
"CSAFPID-220745",
"CSAFPID-220746",
"CSAFPID-220747",
"CSAFPID-220748",
"CSAFPID-220749",
"CSAFPID-220750",
"CSAFPID-220751",
"CSAFPID-230508",
"CSAFPID-230530",
"CSAFPID-230531",
"CSAFPID-230532",
"CSAFPID-230534",
"CSAFPID-230535",
"CSAFPID-230536",
"CSAFPID-230541",
"CSAFPID-230542",
"CSAFPID-230554",
"CSAFPID-230567",
"CSAFPID-230568",
"CSAFPID-230569",
"CSAFPID-239460",
"CSAFPID-239472",
"CSAFPID-239476",
"CSAFPID-239478",
"CSAFPID-239479",
"CSAFPID-239632",
"CSAFPID-239633",
"CSAFPID-239634",
"CSAFPID-239635",
"CSAFPID-239636",
"CSAFPID-239805",
"CSAFPID-239806",
"CSAFPID-239807",
"CSAFPID-248790",
"CSAFPID-256141",
"CSAFPID-256872",
"CSAFPID-256873",
"CSAFPID-256874",
"CSAFPID-256875",
"CSAFPID-257394",
"CSAFPID-80720"
]
},
"release_date": "2019-05-15T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
"product_ids": [
"CSAFPID-201884",
"CSAFPID-201885",
"CSAFPID-201886",
"CSAFPID-208195",
"CSAFPID-208580",
"CSAFPID-208581",
"CSAFPID-208582",
"CSAFPID-208583",
"CSAFPID-213631",
"CSAFPID-220738",
"CSAFPID-220739",
"CSAFPID-220740",
"CSAFPID-220741",
"CSAFPID-220742",
"CSAFPID-220743",
"CSAFPID-220744",
"CSAFPID-220745",
"CSAFPID-220746",
"CSAFPID-220747",
"CSAFPID-220748",
"CSAFPID-220749",
"CSAFPID-220750",
"CSAFPID-220751",
"CSAFPID-230508",
"CSAFPID-230530",
"CSAFPID-230531",
"CSAFPID-230532",
"CSAFPID-230534",
"CSAFPID-230535",
"CSAFPID-230536",
"CSAFPID-230541",
"CSAFPID-230542",
"CSAFPID-230554",
"CSAFPID-230567",
"CSAFPID-230568",
"CSAFPID-230569",
"CSAFPID-239460",
"CSAFPID-239472",
"CSAFPID-239476",
"CSAFPID-239478",
"CSAFPID-239479",
"CSAFPID-239632",
"CSAFPID-239633",
"CSAFPID-239634",
"CSAFPID-239635",
"CSAFPID-239636",
"CSAFPID-239805",
"CSAFPID-239806",
"CSAFPID-239807",
"CSAFPID-248790",
"CSAFPID-256141",
"CSAFPID-256872",
"CSAFPID-256873",
"CSAFPID-256874",
"CSAFPID-256875",
"CSAFPID-257394",
"CSAFPID-80720"
],
"url": "https://software.cisco.com"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.0,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-201884",
"CSAFPID-201885",
"CSAFPID-201886",
"CSAFPID-208195",
"CSAFPID-208580",
"CSAFPID-208581",
"CSAFPID-208582",
"CSAFPID-208583",
"CSAFPID-213631",
"CSAFPID-220738",
"CSAFPID-220739",
"CSAFPID-220740",
"CSAFPID-220741",
"CSAFPID-220742",
"CSAFPID-220743",
"CSAFPID-220744",
"CSAFPID-220745",
"CSAFPID-220746",
"CSAFPID-220747",
"CSAFPID-220748",
"CSAFPID-220749",
"CSAFPID-220750",
"CSAFPID-220751",
"CSAFPID-230508",
"CSAFPID-230530",
"CSAFPID-230531",
"CSAFPID-230532",
"CSAFPID-230534",
"CSAFPID-230535",
"CSAFPID-230536",
"CSAFPID-230541",
"CSAFPID-230542",
"CSAFPID-230554",
"CSAFPID-230567",
"CSAFPID-230568",
"CSAFPID-230569",
"CSAFPID-239460",
"CSAFPID-239472",
"CSAFPID-239476",
"CSAFPID-239478",
"CSAFPID-239479",
"CSAFPID-239632",
"CSAFPID-239633",
"CSAFPID-239634",
"CSAFPID-239635",
"CSAFPID-239636",
"CSAFPID-239805",
"CSAFPID-239806",
"CSAFPID-239807",
"CSAFPID-248790",
"CSAFPID-256141",
"CSAFPID-256872",
"CSAFPID-256873",
"CSAFPID-256874",
"CSAFPID-256875",
"CSAFPID-257394",
"CSAFPID-80720"
]
}
],
"title": "Cisco NX-OS Software Bash Bypass Guest Shell 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.