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
Link | Resource |
---|---|
https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130 | Exploit Third Party Advisory |
https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51 | Exploit Third Party Advisory |
https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249 | Patch Third Party Advisory |
https://github.com/occlum/occlum/compare/0.25.0...v0.26.0 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2022-03-06T20:03:40
Updated: 2022-03-06T20:11:30
Reserved: 2021-11-29T00:00:00
Link: CVE-2021-44421
JSON object: View
NVD Information
Status : Analyzed
Published: 2022-03-10T17:44:15.447
Modified: 2022-03-15T15:22:28.337
Link: CVE-2021-44421
JSON object: View
Redhat Information
No data.
CWE