OpenZFS: user-namespace capability check allows unprivileged local authorization bypass
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| OpenZFS | OpenZFS | unaffected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Openzfs | Openzfs |
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| Source | ID | Title |
|---|---|---|
Ubuntu USN |
USN-8705-1 | OpenZFS vulnerability |
Ubuntu USN |
USN-8705-2 | OpenZFS vulnerability |
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.198% probability within 30 days)
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| References |
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| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Openzfs
Openzfs openzfs |
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| Vendors & Products |
Openzfs
Openzfs openzfs |
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| Description | On Linux, several OpenZFS ioctl authorization checks accept a capability held only within a user-created, unprivileged namespace as equivalent to real host privilege, allowing an unprivileged local user to perform operations that should require root. Affected operations include pool-administrative operations (eg create, import, destroy), pool event log access (zpool events) and fault injection (zinject). Exploiting the problem requires only that the local user is permitted to open /dev/zfs (governed by local device permissions) and that the kernel permits unprivileged user namespace creation. No prior access to the target pool or its underlying devices is needed. | |
| Title | OpenZFS: user-namespace capability check allows unprivileged local authorization bypass | |
| Weaknesses | CWE-863 | |
| References |
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| Metrics |
cvssV4_0
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