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Ghostscript 是一款广泛使用的开源解释器，主要用于处理 PostScript 和 PDF 文件。由于其强大的功能和广泛的应用，Ghostscript 也成为了安全研究人员的重点关注对象。近年来，Ghostscript 沙箱绕过命令执行漏洞频繁出现，给企业和个人用户带来了严重的安全威胁。本文将深入探讨 Ghostscript 沙箱绕过命令执行漏洞的原理、危害以及如何实现有效的漏洞预警。
沙箱（Sandbox）是一种安全机制，用于隔离运行中的程序，限制其对系统资源的访问。通过沙箱机制，可以防止恶意代码对系统造成破坏或泄露敏感信息。
Ghostscript 通过沙箱机制来限制其对系统资源的访问，以防止恶意 PostScript 或 PDF 文件执行危险操作。Ghostscript 的沙箱机制主要包括以下几个方面：
Ghostscript 沙箱绕过命令执行漏洞通常是由于沙箱机制的不完善或配置错误导致的。攻击者可以通过构造特殊的 PostScript 或 PDF 文件，绕过 Ghostscript 的沙箱限制，执行任意系统命令。
Ghostscript 沙箱绕过命令执行漏洞的原理主要包括以下几个方面：
以下是一个简单的漏洞利用示例，展示了如何通过构造恶意 PostScript 文件绕过 Ghostscript 的沙箱限制，执行系统命令：
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