Vulnerability Information
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Vulnerability Title
Denial of service in readExternal method
Vulnerability Description
The Security Team noticed that the termination condition of the for loop in the readExternal method is a controllable variable, which, if tampered with, may lead to CPU exhaustion. As a fix, we added an upper bound and termination condition in the read and write logic. We classify it as a "low-priority but useful improvement". SystemDS is a distributed system and needs to serialize/deserialize data but in many code paths (e.g., on Spark broadcast/shuffle or writing to sequence files) the byte stream is anyway protected by additional CRC fingerprints. In this particular case though, the number of decoders is upper-bounded by twice the number of columns, which means an attacker would need to modify two entries in the byte stream in a consistent manner. By adding these checks robustness was strictly improved with almost zero overhead. These code changes are available in versions higher than 2.2.1.
CVSS Information
N/A
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Vulnerability Title
Apache SystemDS 资源管理错误漏洞
Vulnerability Description
Apache SystemDS是美国阿帕奇（Apache）基金会的用于端到端数据科学生命周期的开源机器学习系统。 Apache SystemDS 2.2.1版本及之前版本存在安全漏洞，该漏洞源于readExternal方法中for循环的终止条件是一个可控变量，如果被篡改，会导致CPU耗尽。
CVSS Information
N/A
Vulnerability Type
N/A