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CVE-2023-6004

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

Published: Jan 3, 2024Updated: Nov 4, 2025 Sources: CVE List NVD BDUCWE-74
NVD MITRE
4.8CVSSMEDIUM
EPSS Score
0.4%
Top 64.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:RS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-74

Affected Products

Red Hat Enterprise Linux 8Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 7Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
red hat inc.commercialUSOperating Systemsaka red hat
ооо «ред софт»commercialRUOperating Systemsaka red soft
and 13 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2024:2504
access.redhat.com
https://access.redhat.com/errata/RHSA-2024:3233
access.redhat.com
https://access.redhat.com/security/cve/CVE-2023-6004
access.redhat.com
and 21 more references View all →

Timeline

Published
Jan 3, 2024
Last Updated
Nov 4, 2025

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