Root escalation via repeated multipathd command keywords
Published Mar 29, 2023 · Updated Feb 18, 2025
Improper authorization in Red Hat Device Mapper Multipath on RHEL 8.7 and 9.1 allows local users to gain root access through multipathd. Multipathd adds numeric keyword values to identify a command, so repeated list keywords can collide with a privileged command instead of remaining idempotent under bitwise OR. Reachability requires local access to the daemon's UNIX socket; successful abuse bypasses command authorization and permits root-level manipulation of multipath configuration.
Summary
What happened
Improper authorization in Red Hat Device Mapper Multipath on RHEL 8.7 and 9.1 allows local users to gain root access through multipathd. Multipathd adds numeric keyword values to identify a command, so repeated list keywords can collide with a privileged command instead of remaining idempotent under bitwise OR. Reachability requires local access to the daemon's UNIX socket; successful abuse bypasses command authorization and permits root-level manipulation of multipath configuration.
The record
- CVE
- CVE-2022-3787
- Published
- Mar 29, 2023
- Updated
- Feb 18, 2025
- Vendor
- Red Hat
- Product
- Device Mapper Multipath
- Classifications
- CWE-285, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 29, 2023CVE publishedPublication date reported by the CVE source.
- Feb 18, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=unknown
What conditions does exploitation require?
What is affected?
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.
Public exploit references
- Authorization bypass and symlink attack in multipathdfunctional · demonstrated
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Technologies
Your stack
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Your stack
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