CVE-2025-11187
Description
A flaw was found in OpenSSL. When an application processes a maliciously crafted PKCS#12 file, an attacker can exploit a stack buffer overflow or a NULL pointer dereference. This can lead to a denial of service (DoS) by crashing the application, and in some cases, may enable arbitrary code execution. The vulnerability arises from the lack of validation for PBKDF2 salt and keylength parameters within the PKCS#12 file.
Statement
This vulnerability is rated Moderate for Red Hat. It affects OpenSSL versions 3.6, 3.5, and 3.4, where improper validation of PBMAC1 parameters in PKCS#12 MAC verification can lead to a stack buffer overflow or NULL pointer dereference. Exploitation requires an application to process a maliciously crafted PKCS#12 file, which is uncommon as these files are typically trusted. OpenSSL versions 3.3, 3.0, 1.1.1, and 1.0.2 are not affected as they do not support PBMAC1 in PKCS#12.
Mitigation
To mitigate this issue, avoid processing untrusted PKCS#12 files. Applications should only handle PKCS#12 files from trusted sources, as these files are typically used for storing private keys and are expected to be secure.
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 | 6.1 | N/A | 6.1 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Unexpected State
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