漏洞信息
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Vulnerability Title
PDF::WebKit versions through 1.2 for Perl allow OS command injection via a 2-arg open() of the output path in to_pdf and of stylesheet paths in _style_tag_for
Vulnerability Description
PDF::WebKit versions through 1.2 for Perl allow OS command injection via a 2-arg open() of the output path in to_pdf and of stylesheet paths in _style_tag_for.
to_pdf reads the generated PDF back from its path argument, and _style_tag_for reads each entry of the stylesheets list, by assigning the path to a local @ARGV and reading it with the diamond operator, which opens each @ARGV element with Perl's 2-arg open(). A value that begins or ends with a pipe ("| cmd", "cmd |") is run as a command rather than opened as a file, and one that begins with a redirect ("> path", ">> path") opens that path for write or append. to_file forwards its path argument to to_pdf and reaches the same read.
Any caller that forwards untrusted input as the output path or as a stylesheets entry can run a command under the process UID; with the "cmd |" form the command's output is returned in place of the PDF, and with the "> path" form the named file is truncated. Stylesheets may only be added to an HTML source, so a URL or file source exposes the output path alone.
CVSS Information
N/A
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Vulnerability Title
Philip Garrett PDF::WebKit 输入验证错误漏洞
Vulnerability Description
Philip Garrett PDF::WebKit是Philip Garrett个人开发者的一个将HTML转换为PDF的组件。 Philip Garrett PDF::WebKit 1.2及之前版本存在安全漏洞,该漏洞源于to_pdf和_style_tag_for中通过2-arg open()处理输出路径和样式表路径时未正确验证输入,管道符开头或结尾的值会被当作命令执行,重定向符开头的值会打开文件进行写入或追加,可能导致操作系统命令注入。
CVSS Information
N/A
Vulnerability Type
N/A