Remote code execution vulnerability via Perl module

[Adam Bishop]

On 3 Jul 2018, at 12:44, David Herselman via Freeradius-Users <freeradius-users at lists.freeradius.org> wrote:
> Any suggestions regarding possibly cleaning other attributes which may result in code execution on the following line?

I'm not a perl expert by any stretch of the imagination, but it sounds like you're using interpolated strings (using double quotes "") with untrusted data, or calling out to a shell script?

Could you post a the few lines of your perl script at the point where the shelling out happens?

In any case, $(... is not a valid NAI, so you could just drop it in policy (FR3 does: https://github.com/FreeRADIUS/freeradius-server/blob/v3.0.x/raddb/policy.d/filter#L18 )

Adam Bishop

  gpg: E75B 1F92 6407 DFDF 9F1C  BF10 C993 2504 6609 D460

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