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CVE-2020-8911

Status Candidate

Overview

A padding oracle vulnerability exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. The SDK allows users to encrypt files with AES-CBC without computing a Message Authentication Code (MAC), which then allows an attacker who has write access to the target's S3 bucket and can observe whether or not an endpoint with access to the key can decrypt a file, they can reconstruct the plaintext with (on average) 128*length (plaintext) queries to the endpoint, by exploiting CBC's ability to manipulate the bytes of the next block and PKCS5 padding errors. It is recommended to update your SDK to V2 or later, and re-encrypt your files.

Related Files

Red Hat Security Advisory 2021-3851-01
Posted Oct 14, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3851-01 - Red Hat 3scale API Management delivers centralized API management features through a distributed, cloud-hosted layer. It includes built-in features to help in building a more successful API program, including access control, rate limits, payment gateway integration, and developer experience tools. This advisory is intended to use with Container Images, for Red Hat 3scale API Management 2.11.0. Issues addressed include a cross site scripting vulnerability.

tags | advisory, xss
systems | linux, redhat
advisories | CVE-2020-8911, CVE-2020-8912, CVE-2021-22922, CVE-2021-22923, CVE-2021-22924, CVE-2021-27218, CVE-2021-3442, CVE-2021-36222, CVE-2021-3653, CVE-2021-3715, CVE-2021-37750
SHA-256 | e4888f040246d49c7a7c2e4f31bece8b08efa09009b3ee41382c5876a9bfdbbc
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