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Cisco DNA Spaces Connector Remote Code Execution Vulnerability (regreSSHion) (cisco cisco-sa-openssh-rce-2024)

high Nessus Plugin ID 310140

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco DNA Spaces Connector is affected by a vulnerability.

 - A remote code execution vulnerability exists in Cisco DNA Spaces Connector due to a signal handler race condition found in sshd, where a client does not authenticate within LoginGraceTime seconds, after which the sshd SIGALRM handler is called asynchronously. An unauthenticated, remote attacker can exploit this to call various functions that are not async-signal-safe with root privileges. (CVE-2024-6387)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwk62273

See Also

http://www.nessus.org/u?1ac35fe1

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwk62273

Plugin Details

Severity: High

ID: 310140

File Name: cisco-sa-openssh-rce-2024-dna.nasl

Version: 1.2

Type: Remote

Family: CISCO

Published: 4/24/2026

Updated: 4/27/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2024-6387

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:dna_spaces%3a_connector

Required KB Items: Cisco/DNA Spaces Connector/Version, Cisco/DNA Spaces Connector/Port

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/1/2024

Vulnerability Publication Date: 7/1/2024

Reference Information

CVE: CVE-2024-6387

CISCO-SA: cisco-sa-openssh-rce-2024

CISCO-BUG-ID: CSCwk62273