CVE-2021-1592

published 2021-08-25

CVE-2021-1592: 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)…

Priority P4 21 medium 4.3 CVSS 3.1

AV N AC L PR L UI N S U C N I N A L

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_unified_computing_system	—	—
cisco	ucs_manager	—	—
cisco	unified_computing_system	>= 4.0 < 4.0\(4m\)	4.0\(4m\)
cisco	unified_computing_system	>= 4.1 < 4.1\(3e\)	4.1\(3e\)

CVSS provenance

nvd v3.1 4.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

nvd v2.0 4.0 MEDIUM AV:N/AC:L/Au:S/C:N/I:N/A:P

vendor_cisco 4.3 MEDIUM

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