CVE-2023-6004: Libssh: proxycommand/proxyjump features allow injection of malicious code through hostname
First published: Wed Nov 22 2023(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libssh Libssh | >=0.8.0<0.9.8 | |
| Libssh Libssh | >=0.10.0<0.10.6 | |
| Fedoraproject Fedora | =38 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| redhat/libssh | <0.9.8 | 0.9.8 |
| redhat/libssh | <0.10.6 | 0.10.6 |
| ubuntu/libssh | <0.6.3-4.3ubuntu0.6+ | 0.6.3-4.3ubuntu0.6+ |
| ubuntu/libssh | <0.8.0~20170825.94 | 0.8.0~20170825.94 |
| ubuntu/libssh | <0.9.3-2ubuntu2.5 | 0.9.3-2ubuntu2.5 |
| ubuntu/libssh | <0.9.6-2ubuntu0.22.04.3 | 0.9.6-2ubuntu0.22.04.3 |
| ubuntu/libssh | <0.10.4-2ubuntu0.3 | 0.10.4-2ubuntu0.3 |
| ubuntu/libssh | <0.10.5-3ubuntu1.2 | 0.10.5-3ubuntu1.2 |
| ubuntu/libssh | <0.10.6-1 | 0.10.6-1 |
| debian/libssh | <=0.8.7-1+deb10u1<=0.8.7-1+deb10u2 | 0.9.8-0+deb11u1 0.10.6-0+deb12u1 0.10.6-2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2255152
- https://bugzilla.redhat.com/show_bug.cgi?id=2251110
- https://www.libssh.org/security/advisories/CVE-2023-6004.txt
- https://vin01.github.io/piptagole/ssh/security/openssh/libssh/remote-code-execution/2023/12/20/openssh-proxycommand-libssh-rce.html
- https://gitlab.com/libssh/libssh-mirror/-/commit/c2c56bacab00766d01671413321d564227aabf19
- https://gitlab.com/libssh/libssh-mirror/-/commit/a66b4a6eae6614d200a3625862d77565b96a7cd3
- https://gitlab.com/libssh/libssh-mirror/-/commit/8615c24647f773a5e04203c7459512715d698be1
- https://gitlab.com/libssh/libssh-mirror/-/commit/c6180409677c765e6b9ae2b18a3a7a9671ac1dbe
- https://gitlab.com/libssh/libssh-mirror/-/commit/9bbb817c0c5434f03613d0783b2ef5f52235b901
- https://gitlab.com/libssh/libssh-mirror/-/commit/22492b69bba22b102342afc574800d354a08e405
- https://gitlab.com/libssh/libssh-mirror/-/commit/d7467498fd988949edde9c6384973250fd454a8b
- https://gitlab.com/libssh/libssh-mirror/-/commit/62d3101c1f76b6891b70c50154e0e934d6b8cb57
- https://gitlab.com/libssh/libssh-mirror/-/commit/cea841d71c025f9c998b7d5fc9f2a2839df62921
- https://gitlab.com/libssh/libssh-mirror/-/commit/2c492ee179d5caa2718c5e768bab6e0b2b64a8b0
- https://gitlab.com/libssh/libssh-mirror/-/issues/227
- https://security-tracker.debian.org/tracker/CVE-2023-6004
- https://access.redhat.com/security/cve/CVE-2023-6004
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/
- https://security.netapp.com/advisory/ntap-20240223-0004/
- https://launchpad.net/bugs/cve/CVE-2023-6004
- https://ubuntu.com/security/notices/USN-6592-1
- https://ubuntu.com/security/notices/USN-6592-2
- https://www.cve.org/CVERecord?id=CVE-2023-6004
- https://nvd.nist.gov/vuln/detail/CVE-2023-6004
- https://gitlab.com/libssh/libssh-mirror/-/commit/1a02364b5107a4125ea3cb76fcdb6beabaebf3be
- https://gitlab.com/libssh/libssh-mirror/-/commit/6f1b1e76bb38bc89819132e1810e4301ec9034a4
- https://ubuntu.com/security/CVE-2023-6004
- https://access.redhat.com/errata/RHSA-2024:2504
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