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A vulnerability in the Virtual Shell (VSH) session management for Cisco NX-OS Software could allow an authenticated, remote attacker to cause a VSH process to fail to delete upon termination. This can lead to a build-up of VSH processes that overtime can deplete system memory. When there is no system memory available, this can cause unexpected system behaviors and crashes. The vulnerability is due to the VSH process not being properly deleted when a remote management connection to the device is disconnected. An attacker could exploit this vulnerability by repeatedly performing a remote management connection to the device and terminating the connection in an unexpected manner. A successful exploit could allow the attacker to cause the VSH processes to fail to delete, which can lead to a system-wide denial of service (DoS) condition. The attacker must have valid user credentials to log in to the device using the remote management connection.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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AND
OR
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 5.2 up to (excluding) 6.2\(29\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.3 up to (excluding) 8.4
OR
cpe:2.3:h:cisco:mds_9132t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9148s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9148t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9216:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9216a:-:*:*:*:*:*:*:*
cpe
AND
OR
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.0\(3\)f up to (excluding) 9.2
OR
cpe:2.3:h:cisco:n9k-c9504-fm-r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-c9508-fm-r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-x96136yc-r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-x9636c-r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-x9636c-rx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-x9636q-r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3618
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.0\(3\)i7 up to (excluding) 7.0\(3\)i7\(6\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 9.2 up to (excluding) 9.2\(3\)
OR
cpe:2.3:h:cisco:nexus_3524-x\/xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3548-x\/xl:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions up to (excluding) 3.2\(3k\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (excluding) 4.0\(2e\)
OR
cpe:2.3:h:cisco:ucs-6296up:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ucs_6248up:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ucs_6324:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ucs_6332:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ucs_6332-16up:-:*:*:*:*:*:*:*
AND
OR
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions up to (excluding) 6.2\(22\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.2 up to (excluding) 7.3\(4\)d1\(1\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 8.0 up to (excluding) 8.2\(3\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 8.3 up to (excluding) 8.4
OR
cpe:2.3:h:cisco:7000_10-slot:-:*:*:*:*:*:*:*
cpe:2.3:h
AND
OR
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions up to (excluding) 7.0\(3\)i4\(9\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.0\(3\)i7 up to (excluding) 7.0\(3\)i7\(4\)
OR
cpe:2.3:h:cisco:n9k-c92160yc-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-c9236c:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-c9272q:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-c93180lc-ex:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:n9k-c93180yc-ex:-:*:*
AND
OR
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions up to (excluding) 7.1\(5\)n1\(1b\)
*cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.3 up to (excluding) 7.3\(5\)n1\(1\)
OR
cpe:2.3:h:cisco:nexus_5010:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_5020:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_5548p:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_5548up:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_5596t:-:*:*:*:*:*:*:*
Added
CVSS V2
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Added
CVSS V3
AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Added
CWE
CWE-400
Changed
Reference Type
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nxos-memleak-dos No Types Assigned
A vulnerability in the Virtual Shell (VSH) session management for Cisco NX-OS Software could allow an authenticated, remote attacker to cause a VSH process to fail to delete upon termination. This can lead to a build-up of VSH processes that overtime can deplete system memory. When there is no system memory available, this can cause unexpected system behaviors and crashes. The vulnerability is due to the VSH process not being properly deleted when a remote management connection to the device is
A vulnerability in the Virtual Shell (VSH) session management for Cisco NX-OS Software could allow an authenticated, remote attacker to cause a VSH process to fail to delete upon termination. This can lead to a build-up of VSH processes that overtime can deplete system memory. When there is no system memory available, this can cause unexpected system behaviors and crashes. The vulnerability is due to the VSH process not being properly deleted when a remote management connection to the device is
Quick Info
CVE Dictionary Entry: CVE-2019-1965 NVD
Published Date: 08/28/2019 NVD
Last Modified: 10/16/2020
Source: Cisco Systems, Inc.
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