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地图 / SSRF via filter bypass due to lax checking on IPs

SSRF via filter bypass due to lax checking on IPs

服务端请求伪造 / SSRF / #1702864

厂商
Nextcloud
严重程度
低危
赏金
$250
弱点
SSRF
研究员
@obitorasu
披露日期
2023-02-10
资产
nextcloud/server
CVE
—

该报告还没有中文解读。

原文摘录

摘自原文(4537 字符中的一小部分)
I was reading up on the recent SSRF bug found on NextCloud which is originally a part of this [report](https://hackerone.com/reports/1608039) by @tomorrowisnew_
原文中的代码
	public function ThrowIfLocalIp(string $ip) : void {
		$localRanges = [
			'100.64.0.0/10', // See RFC 6598
			'192.0.0.0/24', // See RFC 6890
		];
		if (
			(bool)filter_var($ip, FILTER_VALIDATE_IP) &&
			(
				!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | …

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 Nextcloud 所有。

时间线

  • 报告提交
  • 公开披露
阅读 HackerOne 原文 ↗作者 @obitorasu · 版权归作者与 Nextcloud 所有

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