CVE-2020-8904

An arbitrary memory overwrite vulnerability in the trusted memory of Asylo exists in versions prior to 0.6.0. As the ecall_restore function fails to validate the range of the output_len pointer, an attacker can manipulate the tmp_output_len value and write to an arbitrary location in the trusted (enclave) memory. We recommend updating Asylo to version 0.6.0 or later.

CVSS v3 6.4 MEDIUM
CVSS v2.0 5.5 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.1 / Impact : 4.7

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope CHANGED

5.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:P/A:P

Exploitability : 8.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e	Patch Third Party Advisory
https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*

History

21 Nov 2024, 05:39

Type	Values Removed	Values Added
CVSS	v2 : ~~5.5~~ v3 : ~~9.6~~	v2 : 5.5 v3 : 6.4
References	~~() https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e - Patch, Third Party Advisory~~	() https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e - Patch, Third Party Advisory

Information

Published : 2020-08-12 19:15

Updated : 2024-11-21 05:39

NVD link : CVE-2020-8904

Mitre link : CVE-2020-8904

CVE.ORG link : CVE-2020-8904

JSON object : View

Products Affected

google

asylo

CWE

CWE-823

Use of Out-of-range Pointer Offset

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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