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地图 / Poll loop/hang on incomplete HTTP header

Poll loop/hang on incomplete HTTP header

拒绝服务 / 资源消耗失控 / #889160

厂商
curl
严重程度
低危 · CVSS 6.5
赏金
—
弱点
资源消耗失控
研究员
@kugghjul
披露日期
2021-01-22
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(4652 字符中的一小部分)
Summary: When an incomplete server header is missing its value, the curl client will receive the packet but hang while parsing it. Examples of vulnerable server headers: `Location`, `Content-Range` and `Connection`. Adding the `--max-time`option will terminate the request as intended.
原文中的代码
connect(3, {sa_family=AF_INET, sin_port=htons(1337), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress)
poll([{fd=3, events=POLLOUT|POLLWRNORM}], 1, 0) = 1 ([{fd=3, revents=POLLOUT|POLLWRNORM}])
getsockopt(3, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
getpeername(3, …

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 @kugghjul · 版权归作者与 curl 所有

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