漏洞信息
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Vulnerability Title
Unbounded DAA Decompression in Pandora Allows Denial of Service via Decompression Bomb
Vulnerability Description
Pandora contains a denial-of-service vulnerability in its handling of DAA (Direct Access Archive) files. When extracting the internal ISO image from a DAA archive, compressed chunks were decompressed using zlib.decompress() without enforcing a limit on the resulting uncompressed data.
An attacker able to submit a crafted DAA file containing highly compressed data could cause Pandora to decompress a relatively small input into a very large amount of data in memory. Because the decompressed chunks are accumulated to construct the internal ISO image, this could result in excessive memory consumption and potentially CPU exhaustion, causing the extraction worker to become unresponsive, terminate, or affect the availability of the Pandora service.
The patch introduces bounded decompression using decompressobj().decompress() with max_extracted_filesize, verifies the cumulative size of decompressed chunks, and raises a dedicated ZipBomb exception when the configured limit is exceeded. Pandora then aborts extraction and reports the file as too large.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
Vulnerability Type
危险类型文件的不加限制上传
Vulnerability Title
Pandora analysis Pandora 任意文件上传漏洞
Vulnerability Description
Pandora analysis Pandora是Pandora analysis组织开源的一个分析框架,用于发现文件是否可疑,并方便地显示结果。 Pandora analysis Pandora 1.12.5及之前版本存在任意文件上传漏洞,该漏洞源于处理DAA文件时未限制解压数据大小,可能导致攻击者通过提交特制DAA文件造成过度内存消耗和CPU耗尽,引起拒绝服务。
CVSS Information
N/A
Vulnerability Type
N/A