CVE-2021-36357

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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/open-power/skiboot/commit/5be38b672c1410e2f10acd3ad2eecfdc81d5daf7	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:openpowerfoundation:skiboot:2.6:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-10-22 12:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-36357

Mitre link : CVE-2021-36357

CVE.ORG link : CVE-2021-36357

JSON object : View

Products Affected

openpowerfoundation

skiboot

CWE

CWE-681

Incorrect Conversion between Numeric Types

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