On 07/10/2013 04:02 PM, Daniel Kahn Gillmor wrote:
> hi oss-sec folks--
> i recently learned that npm, the node.js language-specific package
> manager, created predictable temporary directory names in a
> world-writable filesystem (/tmp) by default when unpacking archives.
> It looks like this might leave open a classic symlink race such that one
> user could control the location where another user unpacked packages
> coming from an npm installation.
> if the superuser was the one running npm, this might have led to a
> non-privileged user who wins the race getting a privilege escalation as
> well, depending on the contents of the fetched package.
> The issue appears to have been fixed upstream today, here:
>   https://github.com/isaacs/npm/commit/f4d31693
> I first learned about the problem during a related a bug report
> http://bugs.debian.org/715325 (cc'ed here)

sorry, i should also have mentioned that the upstream bug report is:



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