CVE-2024-29509
Description
A flaw was found in Ghostscript. The runpdf command allowed the new C-based PDF interpreter to be invoked from within PS. With this, it can pass various flags and arguments (for example, see pdf_impl_set_param) normally passed via the command line when the PDF interpreter is invoked directly. Because PS-strings are not null-terminated, this issue will result in a heap buffer overflow when a value of PDFPassword is supplied with a NULL byte in the middle.
Statement
This vulnerability in Ghostscript, while serious, is considered moderate rather than important due to several mitigating factors. First, exploitation requires specific conditions, including the ability to supply a crafted PS file with a malicious PDFPassword containing a NULL byte. This restricts the attack surface primarily to scenarios where untrusted PS files are processed. Additionally, the issue does not directly lead to remote code execution or privilege escalation without further exploitation techniques. Instead, it results in a heap buffer overflow, which can be challenging to exploit reliably due to modern memory protection mechanisms.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.4 | 8.8 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | Required | Required | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | High | N/A |
| Integrity Impact | Low | High | N/A |
| Availability Impact | Low | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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