CVE-2021-44421
Description
The pointer-validation logic in util/mem_util.rs in Occlum before 0.26.0 for Intel SGX acts as a confused deputy that allows a local attacker to access unauthorized information via side-channel analysis.
References
PatchThird Party Advisory
ExploitThird Party Advisory
Third Party Advisory
ExploitThird Party Advisory
CvssV3 impact
BaseSeverity | MEDIUM |
ConfidentialityImpact | HIGH |
AttackComplexity | LOW |
Scope | UNCHANGED |
AttackVector | LOCAL |
AvailabilityImpact | NONE |
IntegrityImpact | NONE |
PrivilegesRequired | LOW |
BaseScore | 5.5 |
VectorString | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Version | 3.1 |
UserInteraction | NONE |
CvssV2 impact
AccessComplexity | LOW |
ConfidentialityImpact | PARTIAL |
AvailabilityImpact | NONE |
IntegrityImpact | NONE |
BaseScore | 2.1 |
VectorString | AV:L/AC:L/Au:N/C:P/I:N/A:N |
Version | 2.0 |
AccessVector | LOCAL |
Authentication | NONE |