Re: [tor-bugs] #19281 [Core Tor/Tor]: Potential heap corruption via `write_escaped_data` in control.c

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#19281: Potential heap corruption via `write_escaped_data` in control.c
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:  nickm
     Type:  defect                               |         Status:
                                                 |  merge_ready
 Priority:  High                                 |      Milestone:  Tor:
                                                 |  0.3.2.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  unspecified
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-bug-bounty, heap-correctness,    |  Actual Points:
  disaster-waiting-to-happen, review-group-22    |
Parent ID:                                       |         Points:  0.5
 Reviewer:  dgoulet                              |        Sponsor:
                                                 |  SponsorV-can
-------------------------------------------------+-------------------------
Changes (by dgoulet):

 * status:  needs_review => merge_ready
 * reviewer:   => dgoulet


Comment:

 If by some miracle someone is able to pass a string that is of SIZE_MAX,
 then I can assert my tor through the control port... Hmmm, I would say
 unlikely that is possible because it would mean a string that has the
 length of basically my entire RAM (?) ;).

 {{{
 +  tor_assert(len < SIZE_MAX - 9);
 }}}

 lgtm;

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19281#comment:14>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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