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地图 / Heap Buffer Overflow in libcurl curl_slist_append via Unterminated String

Heap Buffer Overflow in libcurl curl_slist_append via Unterminated String

内存破坏 / 堆溢出 / #3229490

厂商
curl
严重程度
中危
赏金
—
弱点
堆溢出
研究员
@geeknik
披露日期
2025-06-30
资产
https://github.com/curl/curl
CVE
—

该报告还没有中文解读。

原文摘录

摘自原文(1800 字符中的一小部分)
Summary A heap buffer overflow vulnerability exists in libcurl's `curl_slist_append()` function in `lib/slist.c:94`. When the function is called with a non-null-terminated string, the internal `strdup()` call triggers `strlen()` to read beyond allocated buffer boundaries, leading to a heap buffer …
原文中的代码
  char *buffer = malloc(256);
  memset(buffer, 'A', 256); // No null termination
  curl_slist_append(NULL, buffer); // Triggers overflow

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 @geeknik · 版权归作者与 curl 所有

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