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    CVE-2020-8936

    An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to UntrustedCall. UntrustedCall failed to validate the buffer range within sgx_params and allowed the host to return a pointer that was an address within the enclave memory. This allowed an attacker to read memory values from within the enclave.

    Published:Dec 15, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 15, 2020
    EPSS Score:0.00019
    CVSS Score:5.3

    Affected Products

    Vendor
    Google
    Product
    Asylo

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2021-22550 (CVSS 6.5) — An attacker can modify the pointers in enclave memory to overwrite arbitrary memory addresses within the secur…
    CVE-2021-22549 (CVSS 6.5) — An attacker can modify the address to point to trusted memory to overwrite arbitrary trusted memory. It is rec…
    CVE-2021-22548 (CVSS 6.5) — An attacker can change the pointer to untrusted memory to point to trusted memory region which causes copying …
    CVE-2020-8944 (CVSS 5.3) — An arbitrary memory write vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a c…
    CVE-2020-8942 (CVSS 5.3) — An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a ca…
    CVE-2020-8943 (CVSS 5.3) — An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a ca…
    CVE-2020-8941 (CVSS 5.3) — An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a ca…
    CVE-2020-8940 (CVSS 5.3) — An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a ca…
    CVE-2020-8939 (CVSS 5.3) — An out of bounds read on the enc_untrusted_inet_ntop function allows an attack to extend the result size that …

    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