Date: Mon, 12 Mar 2012 15:12:22 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Michael Butler <imb@protected-networks.net> Cc: current@FreeBSD.org Subject: Re: sudo through ssh broken on -current? Message-ID: <4F5E0446.5010704@FreeBSD.org> In-Reply-To: <4F5D3B56.4010702@protected-networks.net> References: <4F5D3B56.4010702@protected-networks.net>
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On 2012-03-12 00:55, Michael Butler wrote: > I noted some thing odd when executing the following .. > > /home/imb> ssh imb@xxxx "sudo /sbin/ipfw list" > > sudo: (malloc) /usr/src/lib/libc/stdlib/malloc.c:2644: Failed assertion: > "(run->regs_mask[elm] & (1U << bit)) == 0" > Abort > > Adding '-t' as a parameter to ssh runs without the assert, This is a double free bug in sudo: http://www.sudo.ws/bugs/show_bug.cgi?id=544 Alternative fix: http://www.andric.com/freebsd/security-sudo-fix-double-free-1.diff
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