CVE-2025-69418
Description
A flaw was found in OpenSSL. When applications directly call the low-level CRYPTO_ocb128_encrypt() or CRYPTO_ocb128_decrypt() functions with non-block-aligned lengths in a single call on hardware-accelerated builds, the trailing 1-15 bytes of a message may be exposed in cleartext. These exposed bytes are not covered by the authentication tag, allowing an attacker to read or tamper with them without detection.
Statement
This vulnerability is rated Low for Red Hat products. In the Red Hat context, impact is limited because typical OpenSSL consumers using higher-level EVP APIs are not affected. The flaw only manifests when applications directly call low-level CRYPTO_ocb128_encrypt() or CRYPTO_ocb128_decrypt() functions with non-block-aligned lengths in hardware-accelerated builds. Additionally, TLS does not use OCB ciphersuites, and FIPS modules are not affected.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
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 Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4 | N/A | 4 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | High | N/A | High |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
cve.org: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Confidentiality,Integrity
Technical Impact: Read Application Data; Modify Application Data
Accountability,Non-Repudiation
Technical Impact: Hide Activities
Frequently Asked Questions
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