CVE-2020-8904

Q: How do I fix CVE-2020-8904?

Upgrade asylo to 0.6.0 or later.

Q: Is CVE-2020-8904 being actively exploited?

Not that we know of. CVE-2020-8904 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.23% is the estimated probability that it will be exploited in the next 30 days. That is higher than 14% of all scored CVEs.

Q: How severe is CVE-2020-8904?

CVE-2020-8904 has a CVSS v3 base score of 6.4, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2020-8904 affect?

Published advisories record a fix for asylo (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

6.4

CVSS v3

NVD

Description

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.

CWE-823 CWE-119Buffer Overflow

How to fix

Remediation Available

asyloNVD

Affected:< 0.6.0Fixed in:0.6.0CVE-2020-8904derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityHigh

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H

Exploit Intelligence

0.23%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

Patch1

github.com

Related Vulnerabilities

Other CWE-823 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2016-2161	High	7.5	21%	-	Fix
CVE-2020-6112	High	7.8	17%	-	-
CVE-2020-27009	High	8.1	7.2%	-	Fix
CVE-2023-46724	High	8.6	4.0%	-	Fix
CVE-2020-13573	High	7.5	3.4%	-	-
CVE-2022-0685	High	7.8	1.7%	-	Fix

Common questions

How do I fix CVE-2020-8904?

Upgrade asylo to 0.6.0 or later.

Is CVE-2020-8904 being actively exploited?

Not that we know of. CVE-2020-8904 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.23% is the estimated probability that it will be exploited in the next 30 days. That is higher than 14% of all scored CVEs.

How severe is CVE-2020-8904?

CVE-2020-8904 has a CVSS v3 base score of 6.4, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2020-8904 affect?

Published advisories record a fix for asylo (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.