Vulnerabilities > CVE-2021-36357 - Incorrect Conversion between Numeric Types vulnerability in Openpowerfoundation Skiboot 2.6

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
openpowerfoundation
CWE-681
critical

Summary

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.

Vulnerable Configurations

Part Description Count
OS
Openpowerfoundation
1