漏洞信息
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Vulnerability Title
IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward
Vulnerability Description
IO::Uncompress::Unzip versions before 2.220 for Perl allow CPU exhaustion via per-byte read loop in fastForward. fastForward() compares length $offset (the digit count of the offset, 1 to 19) against the chunk size $c instead of $offset itself, so $c shrinks from 16 KiB to 1-19 bytes per iteration. Extracting a named entry from an attacker supplied zip via IO::Uncompress::Unzip->new($zip, Name => $target) drives a per-byte read loop scaling with the entry's compressed size, up to the non-Zip64 4 GiB cap.
CVSS Information
N/A
Vulnerability Type
算法复杂性
Vulnerability Title
IO::Uncompress::Unzip 安全漏洞
Vulnerability Description
IO::Uncompress::Unzip是PMQS个人开发者的一个解压库。 IO::Uncompress::Unzip 2.220之前版本存在安全漏洞,该漏洞源于fastForward中每字节读取循环导致CPU耗尽,fastForward将长度偏移量(偏移量的数字位数,1到19)与块大小$c进行比较而非$offset本身,导致$c从16 KiB每次迭代缩小到1-19字节,从攻击者提供的zip中提取命名条目时驱动每字节读取循环,规模可达非Zip64的4 GiB上限。
CVSS Information
N/A
Vulnerability Type
N/A