[SFTP] TOCTOU Race Condition in Upload Resume Logic Leads to Arbitrary File Append
业务逻辑 / TOCTOU 竞态条件 / #3432833
该报告还没有中文解读。
原文摘录
摘自原文(5362 字符中的一小部分)
Summary: A Time-of-check to Time-of-use (TOCTOU) race condition exists in the SFTP upload resume functionality of libcurl. When resuming an upload with CURLOPT_RESUME_FROM set to -1 (the equivalent of the curl -C - command-line flag), libcurl first performs a STAT operation to determine the remote …
默认不展示报告全文。以上为简短摘录,完整复现过程请阅读原文。版权归研究员与 curl 所有。
时间线
- 报告提交
- 公开披露
阅读 HackerOne 原文 ↗作者 @cainvsilf · 版权归作者与 curl 所有