libcupsfilters's cfGetPrinterAttributes5 does not validate IPP attributes returned from an IPP server

CUPS is a standards-based, open-source printing system, and `libcupsfilters` contains the code of the filters of the former `cups-filters` package as library functions to be used for the data format conversion tasks needed in Printer Applications. The `cfGetPrinterAttributes5` function in `libcupsfilters` does not sanitize IPP attributes returned from an IPP server. When these IPP attributes are used, for instance, to generate a PPD file, this can lead to attacker controlled data to be provided to the rest of the CUPS system.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

输入验证不恰当

CUPS 输入验证错误漏洞

OpenPrinting CUPS是OpenPrinting公司的一个适用于 Linux® 和其他类 Unix® 操作系统的基于标准的开源打印系统。 CUPS存在输入验证错误漏洞，该漏洞源于libcupsfilters中的cfGetPrinterAttributes5函数不会清理从 IPP 服务器返回的 IPP 属性。当使用这些 IPP 属性时，可能导致攻击者控制的数据被提供给 CUPS 系统的其余部分。

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