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Vulnerability record · CVE-2023-51385 · published 18 December 2023

CVE-2023-51385: Openbsd openssh os command injection vulnerability

Openbsd · Openssh

In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.

6.5 CVSS 3.1 Medium EPSS 20% · top 2.7% CWE-78 · OS command injection
6.5CVSS 3.1 base score
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
27References
17 Jun 2026Last modified by NVD

Description

In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/fulldisclosure/2024/Mar/21
http://www.openwall.com/lists/oss-security/2023/12/26/4 Mailing ListThird Party Advisory
https://github.com/openssh/openssh-portable/commit/7ef3787c84b6b524501211b11a26c742f829af1a Patch
https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202312-17 Third Party Advisory
https://security.netapp.com/advisory/ntap-20240105-0005/
https://support.apple.com/kb/HT214084
https://vin01.github.io/piptagole/ssh/security/openssh/libssh/remote-code-execution/2023/12/20/openssh-proxycommand-libs Third Party Advisory
https://www.debian.org/security/2023/dsa-5586 Third Party Advisory
https://www.openssh.com/txt/release-9.6 Release Notes
https://www.openwall.com/lists/oss-security/2023/12/18/2 Mailing ListRelease Notes
http://seclists.org/fulldisclosure/2024/Mar/21
http://www.openwall.com/lists/oss-security/2023/12/26/4 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2025/10/07/1
http://www.openwall.com/lists/oss-security/2025/10/12/1
https://github.com/openssh/openssh-portable/commit/7ef3787c84b6b524501211b11a26c742f829af1a Patch
https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202312-17 Third Party Advisory
https://security.netapp.com/advisory/ntap-20240105-0005/
https://support.apple.com/kb/HT214084
https://vin01.github.io/piptagole/ssh/security/openssh/libssh/remote-code-execution/2023/12/20/openssh-proxycommand-libs Third Party Advisory
https://www.debian.org/security/2023/dsa-5586 Third Party Advisory
https://www.openssh.com/txt/release-9.6 Release Notes
https://www.openwall.com/lists/oss-security/2023/12/18/2 Mailing ListRelease Notes
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://cert-portal.siemens.com/productcert/html/ssa-769027.html
https://cert-portal.siemens.com/productcert/html/ssa-794697.html

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Source: NIST National Vulnerability Database (record CVE-2023-51385), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.