CVE-2020-8905

published 2020-08-12

CVE-2020-8905: A buffer length validation vulnerability in Asylo versions prior to 0.6.0 allows an attacker to read data they should not have access to. The…

Priority P3 35 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C H I N A N

A buffer length validation vulnerability in Asylo versions prior to 0.6.0 allows an attacker to read data they should not have access to. The 'enc_untrusted_recvfrom' function generates a return value which is deserialized by 'MessageReader', and copied into three different 'extents'. The length of the third 'extents' is controlled by the outside world, and not verified on copy, allowing the attacker to force Asylo to copy trusted memory data into an untrusted buffer of significantly small length.. We recommend updating Asylo to version 0.6.0 or later.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
google	asylo	< 0.6.0	0.6.0
google_llc	asylo	>= stable < 0.6.0	0.6.0

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvd v2.0 4.0 MEDIUM AV:N/AC:L/Au:S/C:P/I:N/A:N

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CWE-120