CVE-2021-1592
MEDIUMCisco Unified Computing System 4.0-4.0(4m) - Authenticated Denial of Service via SSH Session Exhaustion
Title source: llmDescription
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.
References (1)
Core 1
Core References
Patch, Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucs-ssh-dos-MgvmyrQy
Scores
CVSS v3
4.3
EPSS
0.0100
EPSS Percentile
58.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
CWE-664
Status
published
Products (1)
cisco/unified_computing_system
4.0 - 4.0\(4m\)
Published
Aug 25, 2021
Tracked Since
Feb 18, 2026