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MQTT Protocol Packet Injection via Unchecked CONNACK Remaining Length

其他弱点 / Unlabeled / #3531216

厂商
curl
严重程度
低危
赏金
—
弱点
Unlabeled
研究员
@pajarori
披露日期
2026-02-05
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(2404 字符中的一小部分)
I'm not sure if this is a vulnerability or intended behavior, but I noticed that curl MQTT implementation accepts CONNACK packets with Remaining Length values greater than 2, which appears to violate the MQTT v3.1.1 specification.
原文中的代码
» curl -V
curl 8.18.0 (x86_64-pc-linux-gnu) libcurl/8.18.0 OpenSSL/3.6.1 zlib/1.3.1 brotli/1.2.0 zstd/1.5.7 libidn2/2.3.8 libpsl/0.21.5 libssh2/1.11.1 nghttp2/1.68.0 ngtcp2/1.20.0 nghttp3/1.15.0 mit-krb5/1.21.3
Release-Date: 2026-01-07
Protocols: dict file ftp ftps gopher gophers http https imap …

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 @pajarori · 版权归作者与 curl 所有

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