[Bug libc/12189] __stack_chk_fail should not attempt a backtrace

pasky at suse dot cz sourceware-bugzilla@sourceware.org
Thu Nov 4 09:52:00 GMT 2010


http://sourceware.org/bugzilla/show_bug.cgi?id=12189

Petr Baudis <pasky at suse dot cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |pasky at suse dot cz
         Resolution|WORKSFORME                  |

--- Comment #2 from Petr Baudis <pasky at suse dot cz> 2010-11-04 09:51:45 UTC ---
I'd like to reopen this for another bit - this actually has CVE 2010-3192
assigned and is considered a security bug by some, leaking information in case
the attacker can just trigger fortified source protection. I'm personally
rather ambivalent on whether this should be fixed, but the argument does make
sense. If we would just always print the information if it was useful, we
should have a default SIGSEGV and SIGABRT handlers printing backtrace too. :-)

C.f. http://seclists.org/fulldisclosure/2010/Apr/399,
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-3192

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