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地图 / Buffer write overflow when forming dns over http request

Buffer write overflow when forming dns over http request

内存破坏 / 经典缓冲区溢出 / #694449

厂商
curl
严重程度
低危
赏金
—
弱点
经典缓冲区溢出
研究员
@pauldreik
披露日期
2021-02-08
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(1935 字符中的一小部分)
Summary: If dns over http is used, the hostname to look up is packed into a buffer to send to the dns server using the doh_encode function from the doh.c source file. By default, curl uses a 512 byte buffer. For that length, the buffer may be overflowed with one byte, which is set to 1.

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 @pauldreik · 版权归作者与 curl 所有

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