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[Bug libc/12671] multiple vulnerabilities in netdb.h/aliases.h/glob.h
- From: "max at cxib dot net" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: Thu, 26 May 2011 05:31:32 +0000
- Subject: [Bug libc/12671] multiple vulnerabilities in netdb.h/aliases.h/glob.h
- Auto-submitted: auto-generated
- References: <bug-12671-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=12671
--- Comment #3 from Max <max at cxib dot net> 2011-05-26 05:31:13 UTC ---
I have once again analized problems in netdb. The difference between a gnu and
netbsd is such that NetBSD seems to be vulnerable to stack overflow. I was
unable to reproduce this on Linux. The reason is simple because NetBSD is based
on another code.
http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getservbyname_r.c
http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/net/getservbyport_r.c
Anyway, in my opinion, we should do something with alloca() calls. Certainly
limit the use of the stack to store data.
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