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sshproxy vulnerable to SSH option injection

Low severity GitHub Reviewed Published May 14, 2024 in cea-hpc/sshproxy • Updated Jul 8, 2024

Package

gomod github.com/cea-hpc/sshproxy (Go)

Affected versions

<= 1.6.2

Patched versions

1.6.3

Description

Impact

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.

Patches

The problem is patched starting on version 1.6.3

Workarounds

The only workaround is to use the force_command option in sshproxy.yaml, but it's rarely relevant.

References

References

@cyrilst cyrilst published to cea-hpc/sshproxy May 14, 2024
Published by the National Vulnerability Database May 14, 2024
Published to the GitHub Advisory Database May 14, 2024
Reviewed May 14, 2024
Last updated Jul 8, 2024

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(50th percentile)

Weaknesses

Improper Neutralization of Special Elements used in a Command ('Command Injection')

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Learn more on MITRE.

CVE ID

CVE-2024-34713

GHSA ID

GHSA-jmqp-37m5-49wh

Source code

Credits

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