CVE-2022-2097

Description

AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimized implementation will not encrypt the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was preexisting in the memory that wasn't written. In the special case of "in place" encryption, sixteen bytes of the plaintext would be revealed.

Statement

Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7 ship OpenSSL 1.0 which does not contain the incorrect assembly code (introduced upstream with commit bd30091). Similarly, the versions of shim as shipped with Red Hat Enterprise Linux 8 and 9 are not affected by this issue as they bundle openssl-1.0.2j.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score5.35.3N/A
Attack VectorNetworkNetworkN/A
Attack ComplexityLowLowN/A
Privileges RequiredNoneNoneN/A
User InteractionNoneNoneN/A
ScopeUnchangedUnchangedN/A
ConfidentialityLowLowN/A
Integrity ImpactNoneNoneN/A
Availability ImpactNoneNoneN/A

Vector

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

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

Understanding the Weakness (CWE)

CWE-325

Access Control

Technical Impact: Bypass Protection Mechanism

Confidentiality,Integrity

Technical Impact: Read Application Data; Modify Application Data

Accountability,Non-Repudiation

Technical Impact: Hide Activities

Acknowledgements

Upstream acknowledges Alex Chernyakhovsky (Google) as the original reporter.

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