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.

Related CPE's

a

occlum_project

occlum

*

*

*

*

*

software_guard_extensions

Vulnerable

References

https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130

ExploitThird Party Advisory

https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51

ExploitThird Party Advisory

https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249

PatchThird Party Advisory

https://github.com/occlum/occlum/compare/0.25.0...v0.26.0

Third Party Advisory

Weaknesses

[email protected]

Primary
CWE-203

CVSS impact metrics

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

5.5 · Medium

  • CVSS V3.1

  • CVSS V3.0

  • CVSS V2.0

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2022-03-10T17:44:15.447

3 years ago

Last modified

2022-03-15T15:22:28.337

3 years ago