Date: Fri, 29 Jan 2016 18:43:32 -0300 From: Gustavo Grieco <gustavo.grieco@...il.com> To: oss-security@...ts.openwall.com Subject: Re: Re: CVE request: out-of-bounds write with cpio 2.11 2016-01-29 17:52 GMT-03:00 anarcat <anarcat@...ngeseeds.org>: > I can't actually reproduce this on Debian, which runs 2.11 all the way > back to squeeze: > > (gdb) run -i < ../overflow.cpio > Starting program: /bin/cpio -i < ../overflow.cpio > [Thread debugging using libthread_db enabled] > Using host libthread_db library > "/lib/x86_64-linux-gnu/libthread_db.so.1". > /bin/cpio: Malformed number0000000 > /bin/cpio: warning: skipped 8 bytes of junk > /bin/cpio: Substituting `.' for empty member name > /bin/cpio: . not created: newer or same age version exists > /bin/cpio: premature end of file > [Inferior 1 (process 191) exited with code 02] > > Did i miss something? > Yeap, you need to user valgrind to expose this issue: $ valgrind cpio -i < ../overflow.cpio > > a. > -- > The United States is a nation of laws: > badly written and randomly enforced. > - Frank Zappa > >
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