What’s Vulnerable › Vulnerabilities

CVE-2024-34713: sshproxy vulnerable to SSH option injection

• Severity: low (CVSS 3.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-14 · updated 2026-06-17
• Weakness: CWE-77

Description

sshproxy is used on a gateway to transparently proxy a user SSH connection on the gateway to an internal host via SSH. Prior to version 1.6.3, any user authorized to connect to a ssh server using `sshproxy` can inject options to the `ssh` command executed by `sshproxy`. All versions of `sshproxy` are impacted. The problem is patched starting in version 1.6.3. The only workaround is to use the `force_command` option in `sshproxy.yaml`, but it's rarely relevant.

Affected products

• cea-hpc sshproxy: before 1.6.3 — fixed in 1.6.3

How to fix

Upgrade to a fixed version: cea-hpc sshproxy 1.6.3. Check the vendor advisory for mitigations.

References

• https://github.com/cea-hpc/sshproxy/commit/f7eabd05d5f0f951e160293692327cad9a7d9580
• https://github.com/cea-hpc/sshproxy/security/advisories/GHSA-jmqp-37m5-49wh
• https://github.com/cea-hpc/sshproxy/commit/f7eabd05d5f0f951e160293692327cad9a7d9580
• https://github.com/cea-hpc/sshproxy/security/advisories/GHSA-jmqp-37m5-49wh

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