漏洞信息
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Vulnerability Title
NanaZip: Null-pointer dereference in NanaZip UFS parser when root inode is a symlink
Vulnerability Description
NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a null-pointer dereference exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS image where the root inode (inode 2) is set to IFLNK (symlink) instead of IFDIR (directory). The parser unconditionally treats the root inode as a directory without checking its type, and when the symlink has an embedded target (small di_size), the directory data buffer is zero-length, causing a null-pointer dereference on the first read. This vulnerability is fixed in 6.0.1698.0.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Vulnerability Type
空指针解引用
Vulnerability Title
NanaZip 代码问题漏洞
Vulnerability Description
NanaZip是M2-Team开源的一个压缩软件。 NanaZip 5.0.1252.0版本至6.0.1698.0之前版本存在代码问题漏洞,该漏洞源于UFS/UFS2文件系统镜像解析器无条件将根inode视为目录而不检查其类型,当根inode为符号链接且嵌入目标较小时,目录数据缓冲区长度为零,可能导致空指针取消引用。
CVSS Information
N/A
Vulnerability Type
N/A