SSH-agent socket hijacking via unsynchronized routing state
Published Aug 16, 2022 · Updated Aug 3, 2024
A race condition in Eternal Terminal before 6.2.0 allows local users to hijack other users' forwarded SSH-agent sockets through local IPC. UserTerminalRouter::getInfoForId() reads client ownership data from the mutable idInfoMap without locking it while concurrent connections can alter the mapping. An unprivileged account on the server can win the race as another user logs in, take ownership of that user's agent socket, and authenticate to SSH hosts available to the victim.
Summary
What happened
A race condition in Eternal Terminal before 6.2.0 allows local users to hijack other users' forwarded SSH-agent sockets through local IPC. UserTerminalRouter::getInfoForId() reads client ownership data from the mutable idInfoMap without locking it while concurrent connections can alter the mapping. An unprivileged account on the server can win the race as another user logs in, take ownership of that user's agent socket, and authenticate to SSH hosts available to the victim.
The record
- CVE
- CVE-2022-24950
- Published
- Aug 16, 2022
- Updated
- Aug 3, 2024
- Vendor
- Eternal Terminal Project
- Product
- Eternal Terminal
- Classifications
- CWE-362, T1021.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 16, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=unspecified <6.2.0
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
- Eternal Terminal SSH Authorization Socket Hijacking proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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