Vulnerability Information
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Vulnerability Title
WriteEntryToDirectory used for an archive extraction is vulnerable to partial path traversal.
Vulnerability Description
SharpCompress is a fully managed C# library to deal with many compression types and formats. Versions prior to 0.29.0 are vulnerable to partial path traversal. SharpCompress recreates a hierarchy of directories under destinationDirectory if ExtractFullPath is set to true in options. In order to prevent extraction outside the destination directory the destinationFileName path is verified to begin with fullDestinationDirectoryPath. However, prior to version 0.29.0, it is not enforced that fullDestinationDirectoryPath ends with slash. If the destinationDirectory is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins as the destination directory one level up from the directory, i.e. `/home/user/dir.sh`. Because of the file name and destination directory constraints the arbitrary file creation impact is limited and depends on the use case. This issue is fixed in SharpCompress version 0.29.0.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Vulnerability Title
SharpCompress 路径遍历漏洞
Vulnerability Description
SharpCompress是一个纯C#压缩库。用于 .NET Standard 2.0、2.1、.NET Core 3.1 和 .NET 5.0 。 SharpCompress 存在路径遍历漏洞，该漏洞源于ExtractFullPath设置为 true，SharpCompress 会在 destinationDirectory 下重新创建目录层次结构。攻击者可利用该漏洞访问受限目录之外的位置。
CVSS Information
N/A
Vulnerability Type
N/A