Vulnerability Details CVE-2023-43634
When sealing/unsealing the “vault” key, a list of PCRs is used, which defines which PCRs
are used.
In a previous project, CYMOTIVE found that the configuration is not protected by the secure
boot, and in response Zededa implemented measurements on the config partition that was
mapped to PCR 13.
In that process, PCR 13 was added to the list of PCRs that seal/unseal the key.
In commit “56e589749c6ff58ded862d39535d43253b249acf”, the config partition
measurement moved from PCR 13 to PCR 14, but PCR 14 was not added to the list of
PCRs that seal/unseal the key.
This change makes the measurement of PCR 14 effectively redundant as it would not affect
the sealing/unsealing of the key.
An attacker could modify the config partition without triggering the measured boot, this could
result in the attacker gaining full control over the device with full access to the contents of the
encrypted “vault”
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.7%
CVSS Severity
CVSS v3 Score 8.8
References
Products affected by CVE-2023-43634
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cpe:2.3:o:lfedge:eve:-
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cpe:2.3:o:lfedge:eve:3.0.0
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cpe:2.3:o:lfedge:eve:3.0.1
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cpe:2.3:o:lfedge:eve:3.1.0
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cpe:2.3:o:lfedge:eve:3.1.1
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cpe:2.3:o:lfedge:eve:3.10.0
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cpe:2.3:o:lfedge:eve:3.2.0
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cpe:2.3:o:lfedge:eve:3.3.0
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cpe:2.3:o:lfedge:eve:3.3.1
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cpe:2.3:o:lfedge:eve:3.3.2
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cpe:2.3:o:lfedge:eve:3.4.0
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cpe:2.3:o:lfedge:eve:3.4.1
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cpe:2.3:o:lfedge:eve:3.4.10
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cpe:2.3:o:lfedge:eve:3.4.2
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cpe:2.3:o:lfedge:eve:3.5.0
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cpe:2.3:o:lfedge:eve:3.6.0
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cpe:2.3:o:lfedge:eve:3.7.0
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cpe:2.3:o:lfedge:eve:3.8.0
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cpe:2.3:o:lfedge:eve:3.8.1
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cpe:2.3:o:lfedge:eve:3.8.2
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cpe:2.3:o:lfedge:eve:3.9.0
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cpe:2.3:o:lfedge:eve:3.9.1
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cpe:2.3:o:lfedge:eve:3.9.2
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cpe:2.3:o:lfedge:eve:3.9.3
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cpe:2.3:o:lfedge:eve:4.1.0
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cpe:2.3:o:lfedge:eve:4.1.1
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cpe:2.3:o:lfedge:eve:4.1.2
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cpe:2.3:o:lfedge:eve:4.10.0
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cpe:2.3:o:lfedge:eve:4.2.0
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cpe:2.3:o:lfedge:eve:4.3.0
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cpe:2.3:o:lfedge:eve:4.3.1
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cpe:2.3:o:lfedge:eve:4.5.0
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cpe:2.3:o:lfedge:eve:4.5.1
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cpe:2.3:o:lfedge:eve:4.5.2
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cpe:2.3:o:lfedge:eve:4.6.0
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cpe:2.3:o:lfedge:eve:4.7.0
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cpe:2.3:o:lfedge:eve:4.7.1
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cpe:2.3:o:lfedge:eve:4.8.0
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cpe:2.3:o:lfedge:eve:4.8.1
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cpe:2.3:o:lfedge:eve:4.8.2
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cpe:2.3:o:lfedge:eve:4.8.4
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cpe:2.3:o:lfedge:eve:4.9.0
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cpe:2.3:o:lfedge:eve:4.9.1
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cpe:2.3:o:lfedge:eve:5.0.0
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cpe:2.3:o:lfedge:eve:5.0.1
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cpe:2.3:o:lfedge:eve:5.1.0
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cpe:2.3:o:lfedge:eve:5.1.1
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cpe:2.3:o:lfedge:eve:5.1.10
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cpe:2.3:o:lfedge:eve:5.1.11
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cpe:2.3:o:lfedge:eve:5.10.0
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cpe:2.3:o:lfedge:eve:5.10.1
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cpe:2.3:o:lfedge:eve:5.10.2
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cpe:2.3:o:lfedge:eve:5.10.3
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cpe:2.3:o:lfedge:eve:5.10.4
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cpe:2.3:o:lfedge:eve:5.12.0
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cpe:2.3:o:lfedge:eve:5.12.1
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cpe:2.3:o:lfedge:eve:5.12.2
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cpe:2.3:o:lfedge:eve:5.12.3
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cpe:2.3:o:lfedge:eve:5.12.4
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cpe:2.3:o:lfedge:eve:5.12.5
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cpe:2.3:o:lfedge:eve:5.12.6
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cpe:2.3:o:lfedge:eve:5.12.7
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cpe:2.3:o:lfedge:eve:5.12.8
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cpe:2.3:o:lfedge:eve:5.12.9
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cpe:2.3:o:lfedge:eve:5.14.0
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cpe:2.3:o:lfedge:eve:5.15.0
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cpe:2.3:o:lfedge:eve:5.15.1
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cpe:2.3:o:lfedge:eve:5.15.2
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cpe:2.3:o:lfedge:eve:5.16.0
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cpe:2.3:o:lfedge:eve:5.16.1
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cpe:2.3:o:lfedge:eve:5.17.0
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cpe:2.3:o:lfedge:eve:5.18.0
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cpe:2.3:o:lfedge:eve:5.18.1
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cpe:2.3:o:lfedge:eve:5.19.0
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cpe:2.3:o:lfedge:eve:5.2.0
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cpe:2.3:o:lfedge:eve:5.2.1
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cpe:2.3:o:lfedge:eve:5.2.2
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cpe:2.3:o:lfedge:eve:5.2.3
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cpe:2.3:o:lfedge:eve:5.2.4
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cpe:2.3:o:lfedge:eve:5.20.0
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cpe:2.3:o:lfedge:eve:5.20.1
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cpe:2.3:o:lfedge:eve:5.21.0
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cpe:2.3:o:lfedge:eve:5.21.1
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cpe:2.3:o:lfedge:eve:5.21.2
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cpe:2.3:o:lfedge:eve:5.21.3
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cpe:2.3:o:lfedge:eve:5.21.4
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cpe:2.3:o:lfedge:eve:5.21.5
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cpe:2.3:o:lfedge:eve:5.21.6
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cpe:2.3:o:lfedge:eve:5.21.7
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cpe:2.3:o:lfedge:eve:5.21.8
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cpe:2.3:o:lfedge:eve:5.3.0
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cpe:2.3:o:lfedge:eve:5.4.0
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cpe:2.3:o:lfedge:eve:5.4.1
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cpe:2.3:o:lfedge:eve:5.5.0
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cpe:2.3:o:lfedge:eve:5.6.0
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cpe:2.3:o:lfedge:eve:5.6.1
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cpe:2.3:o:lfedge:eve:5.6.2
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cpe:2.3:o:lfedge:eve:5.6.3
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cpe:2.3:o:lfedge:eve:5.7.0
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cpe:2.3:o:lfedge:eve:5.7.1
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cpe:2.3:o:lfedge:eve:5.8.0
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cpe:2.3:o:lfedge:eve:5.8.1
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cpe:2.3:o:lfedge:eve:5.8.2
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cpe:2.3:o:lfedge:eve:5.9.0
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cpe:2.3:o:lfedge:eve:6.0.0
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cpe:2.3:o:lfedge:eve:6.1.0
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cpe:2.3:o:lfedge:eve:6.1.1
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cpe:2.3:o:lfedge:eve:6.1.2
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cpe:2.3:o:lfedge:eve:6.10.0
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cpe:2.3:o:lfedge:eve:6.11.0
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cpe:2.3:o:lfedge:eve:6.12.0
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cpe:2.3:o:lfedge:eve:6.12.1
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cpe:2.3:o:lfedge:eve:6.12.2
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cpe:2.3:o:lfedge:eve:6.12.3
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cpe:2.3:o:lfedge:eve:6.12.4
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cpe:2.3:o:lfedge:eve:6.13.0
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cpe:2.3:o:lfedge:eve:6.14.0
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cpe:2.3:o:lfedge:eve:6.2.0
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cpe:2.3:o:lfedge:eve:6.3.0
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cpe:2.3:o:lfedge:eve:6.4.0
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cpe:2.3:o:lfedge:eve:6.5.0
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cpe:2.3:o:lfedge:eve:6.6.0
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cpe:2.3:o:lfedge:eve:6.6.1
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cpe:2.3:o:lfedge:eve:6.6.2
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cpe:2.3:o:lfedge:eve:6.6.3
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cpe:2.3:o:lfedge:eve:6.7.0
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cpe:2.3:o:lfedge:eve:6.8.0
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cpe:2.3:o:lfedge:eve:6.8.1
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cpe:2.3:o:lfedge:eve:6.8.2
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cpe:2.3:o:lfedge:eve:6.8.3
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cpe:2.3:o:lfedge:eve:6.8.4
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cpe:2.3:o:lfedge:eve:6.8.5
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cpe:2.3:o:lfedge:eve:6.9.0
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cpe:2.3:o:lfedge:eve:7.0.0
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cpe:2.3:o:lfedge:eve:7.1.0
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cpe:2.3:o:lfedge:eve:7.10
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cpe:2.3:o:lfedge:eve:7.10.0
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cpe:2.3:o:lfedge:eve:7.11.0
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cpe:2.3:o:lfedge:eve:7.2.0
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cpe:2.3:o:lfedge:eve:7.3.0
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cpe:2.3:o:lfedge:eve:7.4.0
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cpe:2.3:o:lfedge:eve:7.4.1
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cpe:2.3:o:lfedge:eve:7.5.0
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cpe:2.3:o:lfedge:eve:7.6.0
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cpe:2.3:o:lfedge:eve:7.7.0
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cpe:2.3:o:lfedge:eve:7.8.0
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cpe:2.3:o:lfedge:eve:7.9.0
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cpe:2.3:o:lfedge:eve:7.9.1
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cpe:2.3:o:lfedge:eve:7.9.2
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cpe:2.3:o:lfedge:eve:8.0.0
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cpe:2.3:o:lfedge:eve:8.1.0
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cpe:2.3:o:lfedge:eve:8.2.0
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cpe:2.3:o:lfedge:eve:8.3.0
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cpe:2.3:o:lfedge:eve:8.3.1
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cpe:2.3:o:lfedge:eve:8.4.0
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cpe:2.3:o:lfedge:eve:8.5.0
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cpe:2.3:o:lfedge:eve:8.5.1
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cpe:2.3:o:lfedge:eve:8.5.2
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cpe:2.3:o:lfedge:eve:8.5.3
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cpe:2.3:o:lfedge:eve:8.5.4
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cpe:2.3:o:lfedge:eve:9.0.0
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cpe:2.3:o:lfedge:eve:9.0.1
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cpe:2.3:o:lfedge:eve:9.1.0
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cpe:2.3:o:lfedge:eve:9.1.1
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cpe:2.3:o:lfedge:eve:9.2.0
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cpe:2.3:o:lfedge:eve:9.3.0
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cpe:2.3:o:lfedge:eve:9.3.1
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cpe:2.3:o:lfedge:eve:9.4.0
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cpe:2.3:o:lfedge:eve:9.4.1
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cpe:2.3:o:lfedge:eve:9.4.2