1sealsemantic last-mile verification

Research / Finding

Firmware extraction: sanitize partition, module and volume path components

F-UEFI-FIRMWARE-PATH-TRAVERSAL-001

Public snapshot: 7 Oct 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

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Recorded evidence

—score not recorded
theopolis/uefi-firmware-parserReported fixtheopolis/uefi-firmware-parser

Firmware extraction: sanitize partition, module and volume path components

Fixed in: Public fix committed 2026-06-04; first containing release not established

fixed publicly
details
Finding IDs
F-UEFI-FIRMWARE-PATH-TRAVERSAL-001 / F-UEFI-FIRMWARE-PATH-TRAVERSAL-002
Status
fixed publicly
Fixed in
Public fix committed 2026-06-04; first containing release not established
Recorded credit
Public fix author: Teddy Reed. Public 1seal credit and a causal link to our report are not established.
Note
One shared public fix covers both report IDs: ME partition/manifest dump paths and firmware volume dump paths now use sanitized components. The patch also adds path containment tests. This records the matching extraction-path correction, not two independent fixes. Tiano decompression CVEs do not apply to this record; symlink-safe extraction is not claimed.

F-UEFI-FIRMWARE-PATH-TRAVERSAL-001: File / path escapes. Firmware-controlled path components can escape the intended extraction directory. Reviewed 7 Oct 2026. Mechanism assessed by 1seal.

Mechanism source for F-UEFI-FIRMWARE-PATH-TRAVERSAL-001

F-UEFI-FIRMWARE-PATH-TRAVERSAL-002: File / path escapes. Firmware-controlled path components can escape the intended extraction directory. Reviewed 7 Oct 2026. Mechanism assessed by 1seal.

Mechanism source for F-UEFI-FIRMWARE-PATH-TRAVERSAL-002

Security area (1seal assessment): Authorization. Firmware-controlled path components can escape the intended extraction directory. Reviewed 7 Oct 2026.

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