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MEDIUM

Libssh: proxycommand/proxyjump features allow injection of malicious code through hostname

Published Jan 3, 2024

Description

A flaw was found in libssh. By utilizing the ProxyCommand or ProxyJump feature, users can exploit unchecked hostname syntax on the client. This issue may allow an attacker to inject malicious code into the command of the features mentioned through the hostname parameter.

Affected products

Remediation

Vendor solution

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Red Hat statement

Despite the potential severity of this issue, the requirement for user interaction to exploit the vulnerability has led to a low severity rating. As a precautionary measure, users are advised to sanitize hostname inputs as a mitigation strategy.

Red Hat mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Weaknesses (1)

CWE-74

References (11)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Jan 3, 2024
Updated Nov 7, 2025
Reserved Nov 7, 2023
Link CVE-2023-6004
CISA Vulnrichment
Updated Jan 10, 2024
NVD
Status Modified
Modified Jun 17, 2026
Link CVE-2023-6004
Red Hat
Severity Low
Public date Dec 18, 2023
Links CVE-2023-6004 - Bugzilla
ENISA EUVD
Assigner redhat
Published Jan 3, 2024
Updated Nov 7, 2025
Exploited since n/a
Link EUVD-2023-58271
EUVD-2023-58271