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[email protected]CVE-2019-1731

HistoryMay 15, 2019 - 5:29 p.m.

CVE-2019-1731

2019-05-1517:29:01

CWE-755

CWE-200

[email protected]

web.nvd.nist.gov

cve-2019-1731

cisco

nx-os software

ssh

key management

vulnerability

unauthorized access

security issue.

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

4.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

A vulnerability in the SSH CLI key management functionality of Cisco NX-OS Software could allow an authenticated, local attacker to expose a user’s private SSH key to all authenticated users on the targeted device. The attacker must authenticate with valid administrator device credentials. The vulnerability is due to incomplete error handling if a specific error type occurs during the SSH key export. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the CLI. A successful exploit could allow the attacker to expose a user’s private SSH key. In addition, a similar type of error in the SSH key import could cause the passphrase-protected private SSH key to be imported unintentionally.

Affected configurations

NVD

Node

cisconx-osRange<7.0\(3\)i4\(9\)

cisconx-osRange7.0\(3\)i7–7.0\(3\)i7\(4\)

AND

cisconexus_3016Match-

cisconexus_3048Match-

cisconexus_3064Match-

cisconexus_3064-tMatch-

cisconexus_31108pc-vMatch-

cisconexus_31108tc-vMatch-

cisconexus_31128pqMatch-

cisconexus_3132c-zMatch-

cisconexus_3132qMatch-

cisconexus_3132q-vMatch-

cisconexus_3132q-xlMatch-

cisconexus_3164qMatch-

cisconexus_3172Match-

cisconexus_3172pq-xlMatch-

cisconexus_3172tqMatch-

cisconexus_3172tq-32tMatch-

cisconexus_3172tq-xlMatch-

cisconexus_3232cMatch-

cisconexus_3264c-eMatch-

cisconexus_3264qMatch-

cisconexus_3408-sMatch-

cisconexus_34180ycMatch-

cisconexus_3432d-sMatch-

cisconexus_3464cMatch-

cisconexus_9000vMatch-

cisconexus_92160yc-xMatch-

cisconexus_92300ycMatch-

cisconexus_92304qcMatch-

cisconexus_92348gc-xMatch-

cisconexus_9236cMatch-

cisconexus_9272qMatch-

cisconexus_93108tc-exMatch-

cisconexus_93108tc-fxMatch-

cisconexus_93120txMatch-

cisconexus_93128txMatch-

cisconexus_93180lc-exMatch-

cisconexus_93180yc-exMatch-

cisconexus_93180yc-fxMatch-

cisconexus_93216tc-fx2Match-

cisconexus_93240yc-fx2Match-

cisconexus_9332cMatch-

cisconexus_9332pqMatch-

cisconexus_93360yc-fx2Match-

cisconexus_9336c-fx2Match-

cisconexus_9336pq_aci_spineMatch-

cisconexus_9348gc-fxpMatch-

cisconexus_9364cMatch-

cisconexus_9372pxMatch-

cisconexus_9372px-eMatch-

cisconexus_9372txMatch-

cisconexus_9372tx-eMatch-

cisconexus_9396pxMatch-

cisconexus_9396txMatch-

Node

cisconx-osRange<6.0\(2\)a8\(10\)

cisconx-osRange7.0\(3\)i4–7.0\(3\)i7\(4\)

AND

cisconexus_3524Match-

cisconexus_3524-xMatch-

cisconexus_3524-xlMatch-

cisconexus_3548Match-

cisconexus_3548-xMatch-

cisconexus_3548-xlMatch-

Node

cisconx-osRange<7.3\(4\)n1\(1\)

AND

cisconexus_5548pMatch-

cisconexus_5548upMatch-

cisconexus_5596tMatch-

cisconexus_5596upMatch-

cisconexus_56128pMatch-

cisconexus_5624qMatch-

cisconexus_5648qMatch-

cisconexus_5672upMatch-

cisconexus_5696qMatch-

cisconexus_6001Match-

cisconexus_6004Match-

Node

cisconx-osRange7.0\(3\)–7.0\(3\)f3\(5\)

AND

cisconexus_36180yc-rMatch-

cisconexus_3636c-rMatch-

cisconexus_9504Match-

cisconexus_9508Match-

cisconexus_9516Match-

CPENameOperatorVersion
cisco:nx-oscisco nx-oslt7.0\(3\)i4\(9\)
cisco:nx-oscisco nx-oslt7.0\(3\)i7\(4\)

CPE	Name	Operator	Version
cisco:nx-os	cisco nx-os	lt	7.0\(3\)i4\(9\)
cisco:nx-os	cisco nx-os	lt	7.0\(3\)i7\(4\)

CNA Affected

[
  {
    "product": "Cisco NX-OS Software",
    "vendor": "Cisco",
    "versions": [
      {
        "lessThan": "8.3(1)",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

www.securityfocus.com/bid/108353

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-ssh-info

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

4.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

Related for CVE-2019-1731

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