Unchecked buffer overrun in enc_untrusted_inet_pton

published 2020-12-15 5y ago modified 2026-06-17 4mo ago also EUVD-2020-29772

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits: 0; none known

An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_inet_pton using an attacker controlled klinux_addr_buffer parameter. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading past commit 8fed5e334131abaf9c5e17307642fbf6ce4a57ec

Patch / fix

links 1

github.com/google/asylo@8fed5e3 commit

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Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

Google LLC Asylo

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input
CWE-125 Out-of-bounds Read

References

github.com /google/asylo/commit/8fed5e334131abaf9c5e17307642fbf6ce4a57ec
patch, third-party-advisory, us-government-resource

Sources

CVE List CVE-2020-8941
NVD CVE-2020-8941

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