CVE-2022-38745
Description
A flaw was found in LibreOffice. When an empty Java class path entry is configured, LibreOffice will search for Java classes in the current working directory, allowing malicious Java classes to load when opening a document using the file manager, resulting in arbitrary code execution.
Statement
To exploit this flaw, an attacker would need to convince a user to extract an archive (tar, zip, etc) containing a LibreOffice document and a specific file with Java code inside it, and then the user would need to open the LibreOffice document normally. As user interaction is required to open an unstrusted file, this flaw was rated with a moderate security impact.
Mitigation
Disabling the Java runtime in LibreOffice will mitigate this issue. To disable it, uncheck the "Use a Java runtime environment" option box via: Tools, Options, LibreOffice/Advanced, Use a Java runtime 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 | 7.8 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | Low | Low | Low |
| Privileges Required | None | None | None |
| User Interaction | Required | Required | Required |
| 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:N/UI:R/S:U/C:H/I:H/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Confidentiality,Integrity,Availability
Technical Impact: Execute Unauthorized Code or Commands
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