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.
Weakness
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libssh | Libssh | 0.8.0 (including) | 0.9.8 (excluding) |
| Libssh | Libssh | 0.10.0 (including) | 0.10.6 (excluding) |
| Red Hat Enterprise Linux 8 | RedHat | libssh-0:0.9.6-14.el8 | * |
| Red Hat Enterprise Linux 8 | RedHat | libssh-0:0.9.6-14.el8 | * |
| Red Hat Enterprise Linux 9 | RedHat | libssh-0:0.10.4-13.el9 | * |
| Red Hat Enterprise Linux 9 | RedHat | libssh-0:0.10.4-13.el9 | * |
| Libssh | Ubuntu | bionic | * |
| Libssh | Ubuntu | esm-infra/bionic | * |
| Libssh | Ubuntu | esm-infra/focal | * |
| Libssh | Ubuntu | esm-infra/xenial | * |
| Libssh | Ubuntu | focal | * |
| Libssh | Ubuntu | jammy | * |
| Libssh | Ubuntu | lunar | * |
| Libssh | Ubuntu | mantic | * |
| Libssh | Ubuntu | trusty | * |
| Libssh | Ubuntu | upstream | * |
| Libssh | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/10.html
- https://cwe.mitre.org/data/definitions/101.html
- https://cwe.mitre.org/data/definitions/105.html
- https://cwe.mitre.org/data/definitions/108.html
- https://cwe.mitre.org/data/definitions/120.html
- https://cwe.mitre.org/data/definitions/13.html
- https://cwe.mitre.org/data/definitions/135.html
- https://cwe.mitre.org/data/definitions/14.html
- https://cwe.mitre.org/data/definitions/24.html
- https://cwe.mitre.org/data/definitions/250.html
- https://cwe.mitre.org/data/definitions/267.html
- https://cwe.mitre.org/data/definitions/273.html
- https://cwe.mitre.org/data/definitions/28.html
- https://cwe.mitre.org/data/definitions/3.html
- https://cwe.mitre.org/data/definitions/34.html
- https://cwe.mitre.org/data/definitions/42.html
- https://cwe.mitre.org/data/definitions/43.html
- https://cwe.mitre.org/data/definitions/45.html
- https://cwe.mitre.org/data/definitions/46.html
- https://cwe.mitre.org/data/definitions/47.html
- https://cwe.mitre.org/data/definitions/51.html
- https://cwe.mitre.org/data/definitions/52.html
- https://cwe.mitre.org/data/definitions/53.html
- https://cwe.mitre.org/data/definitions/6.html
- https://cwe.mitre.org/data/definitions/64.html
- https://cwe.mitre.org/data/definitions/67.html
- https://cwe.mitre.org/data/definitions/7.html
- https://cwe.mitre.org/data/definitions/71.html
- https://cwe.mitre.org/data/definitions/72.html
- https://cwe.mitre.org/data/definitions/76.html
- https://cwe.mitre.org/data/definitions/78.html
- https://cwe.mitre.org/data/definitions/79.html
- https://cwe.mitre.org/data/definitions/8.html
- https://cwe.mitre.org/data/definitions/80.html
- https://cwe.mitre.org/data/definitions/83.html
- https://cwe.mitre.org/data/definitions/84.html
- https://cwe.mitre.org/data/definitions/9.html
References
- https://access.redhat.com/errata/RHSA-2024:2504
- https://access.redhat.com/errata/RHSA-2024:3233
- https://access.redhat.com/security/cve/CVE-2023-6004
- https://bugzilla.redhat.com/show_bug.cgi?id=2251110
- https://www.libssh.org/security/advisories/CVE-2023-6004.txt
- https://access.redhat.com/errata/RHSA-2024:2504
- https://access.redhat.com/errata/RHSA-2024:3233
- https://access.redhat.com/security/cve/CVE-2023-6004
- https://bugzilla.redhat.com/show_bug.cgi?id=2251110
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/
- https://security.netapp.com/advisory/ntap-20240223-0004/
- https://www.libssh.org/security/advisories/CVE-2023-6004.txt