CVE-2022-2582: Exposure of unencrypted plaintext hash in github.com/aws/aws-sdk-go

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-12-27 · updated 2026-06-17
Weakness: CWE-326

Description

The AWS S3 Crypto SDK sends an unencrypted hash of the plaintext alongside the ciphertext as a metadata field. This hash can be used to brute force the plaintext, if the hash is readable to the attacker. AWS now blocks this metadata field, but older SDK versions still send it.

Affected products

aws-sdk-cpp: before 1.34.0 — fixed in 1.34.0
Go Github.Com/Aws/Aws-Sdk-Go: before 1.34.0 — fixed in 1.34.0

How to fix

Upgrade to a fixed version: aws-sdk-cpp 1.34.0; Go Github.Com/Aws/Aws-Sdk-Go 1.34.0. Check the vendor advisory for mitigations.

References

https://github.com/aws/aws-sdk-go/commit/35fa6ddf45c061e0f08d3a3b5119f8f4da38f6d1
https://pkg.go.dev/vuln/GO-2022-0391
https://github.com/aws/aws-sdk-go/commit/35fa6ddf45c061e0f08d3a3b5119f8f4da38f6d1
https://pkg.go.dev/vuln/GO-2022-0391

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