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CVE-2020-8912

15
FAUCET Score

CVE-2020-8912 is a low-severity vulnerability in the AWS S3 Crypto SDK for GoLang versions prior to V2, where an attacker with write access to a bucket can manipulate the encryption algorithm of an object. This allows a change from AES-GCM to AES-CTR, which, when combined with a decryption oracle, can expose the authentication key used by AES-GCM. The attack requires local access and high attack complexity, resulting in a low impact on confidentiality and no impact on integrity or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0CPE matchmatch criteria
cpe:2.3:a:amazon:aws_s3_crypto_sdk:*:*:*:*:*:golang:*:*

CVSS Data

CVSS version used by this source: 3.1

2.5LOW

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.0
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
14.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 43rd percentile among its peer group of 223 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

gopatch availablevia ghsa
Product: github.com/aws/aws-sdk-goFixed in: 1.34.0
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 7Fixed in: 3scale-amp2/3scale-rhel7-operator:1.14.0-4
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 7Fixed in: 3scale-amp2/3scale-rhel7-operator-metadata:2.11.0-16
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 7Fixed in: 3scale-amp2/apicast-rhel7-operator:1.14.0-3
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 7Fixed in: 3scale-amp2/apicast-rhel7-operator-metadata:2.11.0-9
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 7Fixed in: 3scale-amp2/memcached-rhel7:1.4.16-38
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 7Fixed in: 3scale-amp2/system-rhel7:1.15.0-8
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 8Fixed in: 3scale-amp2/apicast-gateway-rhel8:1.20.0-6
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 8Fixed in: 3scale-amp2/backend-rhel8:1.14.0-3
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 8Fixed in: 3scale-amp2/toolbox-rhel8:1.6.0-7
View patch
redhatpatch availablevia redhat_api
Product: 3scale API Management 2.11 on RHEL 8Fixed in: 3scale-amp2/zync-rhel8:1.14.0-3
View patch
redhatvendor investigatingvia redhat_api
Product: A-MQ Interconnect 1Fixed in: amq-cert-manager-container
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: CLI
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: knative-eventing
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: knative-serving
redhatvendor investigatingvia redhat_api
Product: Red Hat Fuse 7Fixed in: dv-operator-container
redhatno patchvia redhat_api
Product: Red Hat Integration Service RegistryFixed in: integration-service-registry-operator-container

Vendor Advisories (2)

goGHSA-7f33-f4f5-xwgwlow

In-band key negotiation issue in AWS S3 Crypto SDK for golang

Feb 11, 2022
redhatCVE-2020-8912Low

aws-sdk-go: In-band key negotiation issue in AWS S3 Crypto SDK for golang

Aug 11, 2020

References

aws.amazon.com / blogs/developer/updates-to-the-amazon-s3-encryption-client
Vendor Advisory
github.com / google/security-research/security/advisories/GHSA-7f33-f4f5-xwgw
ExploitThird Party Advisory