Code execution via unvalidated SSH username
Published Nov 14, 2024 · Updated Nov 15, 2024
Command injection in GitHub CLI 2.61.0 and earlier allows remote attackers to execute code when a user connects to a malicious Codespace. The gh codespace ssh and gh codespace logs paths pass the remote SSH username into ssh without rejecting option-like values, so a username beginning with -oProxyCommand supplies an attacker-controlled command. Exploitation requires a user to invoke one of those commands against a malicious third-party devcontainer, and the command runs on the user's workstation.
Summary
What happened
Command injection in GitHub CLI 2.61.0 and earlier allows remote attackers to execute code when a user connects to a malicious Codespace. The gh codespace ssh and gh codespace logs paths pass the remote SSH username into ssh without rejecting option-like values, so a username beginning with -oProxyCommand supplies an attacker-controlled command. Exploitation requires a user to invoke one of those commands against a malicious third-party devcontainer, and the command runs on the user's workstation.
The record
- CVE
- CVE-2024-52308
- Published
- Nov 14, 2024
- Updated
- Nov 15, 2024
- Vendor
- Product
- GitHub CLI
- Classifications
- T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 14, 2024CVE publishedPublication date reported by the CVE source.
- Nov 15, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=2.6.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Malicious Codespace SSH username proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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