CVE-2021-1592

Published on: 08/25/2021 12:00:00 AM UTC

Last Modified on: 09/03/2021 01:50:00 PM UTC

CVE-2021-1592 - advisory for cisco-sa-ucs-ssh-dos-MgvmyrQy

Source: Mitre Source: NIST CVE.ORG Print: PDF PDF
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Certain versions of Unified Computing System from Cisco contain the following vulnerability:

A vulnerability in the way Cisco UCS Manager software handles SSH sessions could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management for established SSH sessions. An attacker could exploit this vulnerability by opening a significant number of SSH sessions on an affected device. A successful exploit could allow the attacker to cause a crash and restart of internal Cisco UCS Manager software processes and a temporary loss of access to the Cisco UCS Manager CLI and web UI. Note: The attacker must have valid user credentials to authenticate to the affected device.

  • CVE-2021-1592 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.
  • 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.
  • Affected Vendor/Software: URL Logo Cisco - Cisco Unified Computing System (Managed) version n/a

CVSS3 Score: 4.3 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE NONE LOW

CVSS2 Score: 4 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW SINGLE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE NONE PARTIAL

CVE References

Description Tags Link
Cisco UCS Manager Software SSH Sessions Denial of Service Vulnerability tools.cisco.com
text/html
URL Logo CISCO 20210825 Cisco UCS Manager Software SSH Sessions Denial of Service Vulnerability

Related QID Numbers

  • 317025 Cisco UCS Manager Software SSH Sessions Denial of Service Vulnerability (cisco-sa-ucs-ssh-dos-MgvmyrQy)

Exploit/POC from Github

PoC for exploiting CVE-2021-1592 : A vulnerability in the way Cisco UCS Manager software handles SSH sessions could a…

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationCiscoUnified Computing SystemAllAllAllAll
Hardware Device InfoCiscoUnified Computing System 64108-AllAllAll
Hardware Device InfoCiscoUnified Computing System 6454-AllAllAll
  • cpe:2.3:a:cisco:unified_computing_system:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:cisco:unified_computing_system_64108:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:cisco:unified_computing_system_6454:-:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
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