CVE-2026-25797
Description
A flaw was found in ImageMagick, a software used for editing and manipulating digital images. This vulnerability allows an attacker to inject malicious code into PostScript files due to improper input sanitization in the PostScript coders. When a specially crafted file is processed by a printer or viewer, this injected code can be executed, potentially leading to arbitrary code execution. A similar issue exists in the HTML encoder, where improper escaping of strings could allow for arbitrary HTML injection.
Statement
This vulnerability has a MODERATE impact. ImageMagick's PostScript coders, as shipped in Red Hat Enterprise Linux 6 ELS and 7 ELS, are susceptible to arbitrary code injection. Processing a specially crafted file could lead to the execution of malicious PostScript code when rendered by a printer or viewer.
Mitigation
To mitigate this vulnerability, restrict ImageMagick's ability to process untrusted input files, especially when generating PostScript output. Alternatively, disable the PostScript (PS) coder in ImageMagick's policy configuration to prevent the creation of potentially malicious PostScript files. This can be achieved by editing the ImageMagick policy file, typically located at /etc/ImageMagick-X/policy.xml (where X is the ImageMagick version), and adding or modifying a policy entry to disable the 'PS' format. For example, add <policy domain="coder" rights="none" pattern="PS" /> within the <policymap> tags. This action may impact applications that rely on ImageMagick's ability to write PostScript files. A service restart may be required for changes to take effect.
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 | 5.7 | 5.3 | N/A |
| Attack Vector | Local | Local | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | Low | N/A |
| User Interaction | None | None | N/A |
| Scope | Changed | Unchanged | N/A |
| Confidentiality | None | Low | N/A |
| Integrity Impact | Low | Low | N/A |
| Availability Impact | Low | Low | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
In some cases, injectable code controls authentication; this may lead to a remote vulnerability.
Access Control
Technical Impact: Gain Privileges or Assume Identity
Injected code can access resources that the attacker is directly prevented from accessing.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
When a product allows a user's input to contain code syntax, it might be possible for an attacker to craft the code in such a way that it will alter the intended control flow of the product. As a result, code injection can often result in the execution of arbitrary code. Code injection attacks can also lead to loss of data integrity in nearly all cases, since the control-plane data injected is always incidental to data recall or writing.
Non-Repudiation
Technical Impact: Hide Activities
Often the actions performed by injected control code are unlogged.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
