var-201903-0591
Vulnerability from variot
A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to an issue with allocating and freeing memory buffers in the network stack. An attacker could exploit this vulnerability by sending crafted TCP streams to an affected device in a sustained way. A successful exploit could cause the network stack of an affected device to run out of available buffers, impairing operations of control plane and management plane protocols, resulting in a DoS condition. Note: This vulnerability can be triggered only by traffic that is destined to an affected device and cannot be exploited using traffic that transits an affected device. Nexus 1000V Switch for Microsoft Hyper-V is affected in versions prior to 5.2(1)SM3(2.1). Nexus 1000V Switch for VMware vSphere is affected in versions prior to 5.2(1)SV3(4.1a). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(6) and 9.2(2). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(11), 7.0(3)I7(6), and 9.2(2). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5) and 9.2(2). Nexus 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(5)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22. Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5) and 9.2(2). UCS 6200 and 6300 Series Fabric Interconnect are affected in versions prior to 3.2(3j) and 4.0(2a). UCS 6400 Series Fabric Interconnect are affected in versions prior to 4.0(2a). Cisco NX-OS The software contains a resource management vulnerability.Service operation interruption (DoS) There is a possibility of being put into a state. This issue is being tracked by Cisco bug ID CSCvk55013, CSCvm53108, CSCvm53112, CSCvm53113, CSCvm53114, CSCvm53115, CSCvm53116, CSCvm53125 and CSCvm53128. Cisco NX-OS Software is a data center-level operating system software used by a set of switches of Cisco
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"data": "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, or otherwise using such software upgrades, accessing, customers agree to follow the terms of the Cisco software license: https://www.cisco.com/c/en/us/products/end-user-license-agreement.html Additionally, customers should consider that this advisory is part of a bundled publication. The following page provides a complete list of bundle advisories: Cisco?Event Response: March 2019 Cisco?FXOS and NX-OS Software Security Advisory Bundled Publication. In the following tables, refer to the Recommended Releases documents in the release notes for the device., the left column lists releases of Cisco?FXOS Software or Cisco?NX-OS Software. The center column indicates whether a release is affected by the vulnerability described in this advisory and the first release that includes the fix for this vulnerability. The right column indicates whether a release is affected by all the vulnerabilities described in this bundle and which release includes fixes for those vulnerabilities. Although the releases listed in the right column of each table include fixes for the vulnerabilities, which are available from the Cisco Security Advisories and Alerts page, 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 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 Customers are advised to upgrade to an appropriate release as indicated in the applicable table in this section. To help ensure a complete upgrade solution, administrators can refer to the following Recommended Releases documents.?If a security advisory recommends a later release, or major revision upgrades. When considering software upgrades,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, Cisco recommends following the advisory guidance. Cisco MDS Series Switches Cisco Nexus 1000V for VMware Switch Cisco Nexus 3000 Series and 3500 Series Switches Cisco Nexus 5000 Series Switches Cisco Nexus 5500 Platform Switches Cisco Nexus 6000 Series Switches Cisco Nexus 7000 Series Switches Cisco Nexus 9000 Series Switches Cisco Nexus 9000 Series ACI-Mode Switches For help determining the best Cisco NX-OS Software release for Cisco UCS, and 6000 Series Switches: CSCvm53115 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 5.2 7.1(5)N1(1b) 7.1(5)N1(1b) 5.2 7.1(5)N1(1b) 7.1(5)N1(1b) 6.0 7.1(5)N1(1b) 7.1(5)N1(1b) 7.0 7.1(5)N1(1b) 7.1(5)N1(1b) 7.1 7.1(5)N1(1b) 7.1(5)N1(1b) 7.2 7.3(5)N1(1) 7.3(5)N1(1) 7.3 7.3(5)N1(1) 7.3(5)N1(1) Nexus 7000 and 7700 Series Switches: CSCvm53128 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 6.2 6.2(22) 6.2(22) 6.2 6.2(22) 6.2(22) 7.2 7.3(3)D1(1) 8.2(3)? 7.3 7.3(3)D1(1) 8.2(3)? 8.0 8.2(3) 8.2(3)? 8.1 8.2(3) 8.2(3) 8.2 8.2(3) 8.2(3) 8.3 8.3(2) 8.3(2) Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvk55013 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6) 7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6) 7.0(3)I5 7.0(3)I7(6) 7.0(3)I7(6) 7.0(3)I6 7.0(3)I7(6) 7.0(3)I7(6) 7.0(3)I7 7.0(3)I7(6) 7.0(3)I7(6)? 9.2 9.2(2) 9.2(2) Nexus 9500 R-Series Line Cards and Fabric Modules: CSCvm53108 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories 7.0(3) 7.0(3)F3(5) 7.0(3)F3(5) 9.2 9.2(2) 9.2(2) UCS 6200 and 6300 Series Fabric Interconnects: CSCvm53116 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 3.1 3.2(3j) 3.2(3j) 3.1 3.2(3j) 3.2(3j) 3.2 3.2(3j) 3.2(3j) 4.0 4.0(2a) 4.0(2a) UCS 6400 Series Fabric Interconnects: CSCvm53125 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories 4.0 4.0(2a) 4.0(2a) Additional Resources For help determining the best Cisco NX-OS Software release for a Cisco Nexus Switch, to determine exposure and a complete upgrade solution. In all cases, procured from Cisco directly, 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 may only download software for which they have a valid license, 5600, additional software feature sets, customers are advised to regularly consult the advisories for Cisco products, downloading, the fix related to the Cisco NX-OS Software Image Signature Verification Vulnerability requires a BIOS upgrade as part of the software upgrade. Customers who are upgrading the software for any of the following products are advised to refer to this advisory for further details about the BIOS upgrade and affected product IDs and BIOS versions: Nexus 3000 Series Switches Nexus 9000 Series Fabric Switches in ACI mode Nexus 9000 Series Switches in standalone NX-OS mode Nexus 9500 R-Series Line Cards and Fabric Modules Nexus 1000V Switch for Microsoft Hyper-V: CSCvm53112 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 5.2 5.2(1)SM3(2.1) 5.2(1)SM3(2.1) 5.2 5.2(1)SM3(2.1) 5.2(1)SM3(2.1) Nexus 1000V Switch for VMware vSphere: CSCvm53113 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 5.2 5.2(1)SV3(4.1a) 5.2(1)SV3(4.1a) 5.2 5.2(1)SV3(4.1a) 5.2(1)SV3(4.1a) Nexus 3000 Series Switches: CSCvk55013 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6) ? 7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6) 7.0(3)I5 7.0(3)I7(6) 7.0(3)I7(6) 7.0(3)I6 7.0(3)I7(6) 7.0(3)I7(6) 7.0(3)I7 7.0(3)I7(6) 7.0(3)I7(6) ? 9.2 9.2(2) 9.2(2) Nexus 3500 Platform Switches: CSCvm53114 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 6.0(2)A8 6.0(2)A8(11) 6.0(2)A8(11) 6.0(2)A8 6.0(2)A8(11) 6.0(2)A8(11) 7.0(3) 7.0(3)I7(6) 7.0(3)I7(6) 9.2 9.2(2) 9.2(2) Nexus 3600 Platform Switches: CSCvm53108 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories 7.0(3) 7.0(3)F3(5) 7.0(3)F3(5) 9.2 9.2(2) 9.2(2) Nexus 5500",
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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.