CVE-2021-44421

    Dashboard / Vulnerabilities / CVE-2021-44421

    CVE-2021-44421

    Published: 10 Mar 2022Last Modified: 20 Oct 2026

    Summary:

    Details: 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: https://github.com/occlum/occlum/compare/0.25.0...v0.26.0, https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249, https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130, https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a428ea3409bab6d605042552594c41d716d02ab8

    Affected versions

    0.25.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-44421 | CVE-DB