Libssh: proxycommand/proxyjump features allow injection of malicious code through hostname
CVE-2023-6004

4.8MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 7
Vendor
CVE Published:
3 January 2024

What is CVE-2023-6004?

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.

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Affected Version(s)

Red Hat Enterprise Linux 8 0:0.9.6-14.el8

Red Hat Enterprise Linux 8 0:0.9.6-14.el8

Red Hat Enterprise Linux 9 0:0.10.4-13.el9

References

https://access.redhat.com/errata/RHSA-2024:2504
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:3233
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-6004
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Norbert Pocs (libssh) and vinci@protonmail.ch for reporting this issue.
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