CVE-2022-41741
Description
A vulnerability was found in NGINX's module, ngx_http_mp4_module. This flaw allows a local attacker to corrupt NGINX worker memory, resulting in its termination using a specially crafted audio or video file. The issue affects only NGINX products built with ngx_http_mp4_module when the mp4 directive is used in the configuration file. Further, the attack is possible only if an attacker can trigger the processing of a specially crafted audio or video file with ngx_http_mp4_module.
Statement
For affected Red Hat products, the impact of this vulnerability is MODERATE. A local attacker with low privileges who can cause a specially crafted audio or video file to be processed by nginx's ngx_http_mp4_module, when the mp4 directive is configured, can corrupt NGINX worker memory, resulting in worker termination and potentially other impact. Current affects include Red Hat Enterprise Linux nginx streams, Red Hat Software Collections nginx streams, Red Hat Ansible Automation Platform, Ansible Services, Hosted OpenShift, cloud.redhat.com, Other Services, and Community Projects. The current affects also include delegated NOTAFFECTED records for Managed Application Services, one Red Hat Ansible Automation Platform record, and one Red Hat Enterprise Linux 9.7 record; these are outside the vulnerable configuration scope because exploitation requires both ngx_http_mp4_module and use of the mp4 directive. Red Hat and NIST assign CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), while CVE.org records 7.0 with higher attack complexity; Red Hat's current impact remains MODERATE.
Mitigation
A mitigation for this vulnerability would be to disable the ngx_http_mp4_module module in your local Nginx environment.
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 | 7.8 | 7.8 | 7 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | Low | Low | High |
| Privileges Required | Low | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | High | High |
| Integrity Impact | High | High | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
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