Vulnerability 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.
CVSS Score
5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Occlum Project | Occlum | < 0.26.0 |
Related Weaknesses (CWE)
References
- https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/sExploitThird Party Advisory
- https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/sExploitThird Party Advisory
- https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249PatchThird Party Advisory
- https://github.com/occlum/occlum/compare/0.25.0...v0.26.0Third Party Advisory
- https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/sExploitThird Party Advisory
- https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/sExploitThird Party Advisory
- https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249PatchThird Party Advisory
- https://github.com/occlum/occlum/compare/0.25.0...v0.26.0Third Party Advisory
FAQ
What is CVE-2021-44421?
CVE-2021-44421 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 analys...
How severe is CVE-2021-44421?
CVE-2021-44421 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-44421?
Check the references section above for vendor advisories and patch information. Affected products include: Occlum Project Occlum.