{ "CVE_data_meta": { "ASSIGNER": "security@apache.org", "ID": "CVE-2022-26477", "STATE": "PUBLIC", "TITLE": "Denial of service in readExternal method" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Apache SystemDS", "version": { "version_data": [ { "version_affected": "<", "version_value": "2.2.2" } ] } } ] }, "vendor_name": "Apache Software Foundation" } ] } }, "credit": [ { "lang": "eng", "value": "Apache SystemDS is like to thank Apache Security Team for reporting this issue." } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "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." } ] }, "generator": { "engine": "Vulnogram 0.0.9" }, "impact": [ {} ], "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-400 Uncontrolled Resource Consumption" } ] } ] }, "references": { "reference_data": [ { "refsource": "MISC", "url": "https://lists.apache.org/thread/r4x2d2r6d4zykdrrx6s2l4qbxgzws0z3", "name": "https://lists.apache.org/thread/r4x2d2r6d4zykdrrx6s2l4qbxgzws0z3" }, { "refsource": "CONFIRM", "name": "https://security.netapp.com/advisory/ntap-20220812-0003/", "url": "https://security.netapp.com/advisory/ntap-20220812-0003/" } ] }, "source": { "discovery": "UNKNOWN" } }