by Kastro
Paper/Archive/CVE-2021-36357

CVE-2021-36357

mitre — An issue was discovered in OpenPOWER 2.6 firmware.

EPSS 1%CVSS 9.8
critical.is priorityof 100
43
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 67.6.676 × 2013.5No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

An issue was discovered in OpenPOWER 2.6 firmware. unpack_timestamp() calls le32_to_cpu() for endian conversion of a uint16_t "year" value, resulting in a type mismatch that can truncate a higher integer value to a smaller one, and bypass a timestamp check. The fix is to use the right endian conversion function.

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgithub.com/open-power/skiboot/commit/5be38b672c1410e2f10acd3ad2eecfdc81d5daf7