[tor-bugs] #17868 [Core Tor/Tor]: base64_decode_nopad() destination buffer length problem

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Jun 16 21:39:25 UTC 2016


#17868: base64_decode_nopad() destination buffer length problem
--------------------------+------------------------------------
 Reporter:  dgoulet       |          Owner:  nikkolasg
     Type:  defect        |         Status:  needs_revision
 Priority:  Medium        |      Milestone:  Tor: 0.2.9.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:  0.1
 Reviewer:  dgoulet       |        Sponsor:  SponsorR-can
--------------------------+------------------------------------

Comment (by nikkolasg):

 You're damn right :) After doing your first change, it seemed like we
 could simplify way more ... and we can. I removed the base64_decode_impl()
 because it's in fact useless now. I added another test also to check
 invalid input without padding (srclen % 4 == 1).
 You'll have to double check to make sure it's fine but the *sane
 conditions* seem respected.
 If you want me to work based on your branch, could you give a link to your
 repo ?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17868#comment:16>
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