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CVE-2023-6004

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

Medium4.8EPSS 0.45%
Published
Updated
Reserved
Assigned by
redhat

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.

Scores

CVSS scores of CVE-2023-6004, by who scored it
Scored byCVSSScoreVector
redhatCNA (assigner)3.1Medium4.8CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
NVDNVD · Modified3.1Medium4.8CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
EPSS (exploitation in 30 days)
0.45% · top 61% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.

Weakness

Affected products

What to do

Workaround: 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.

References (8)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2023-6004 badge
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Record last updated .