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[Bug network/20010] getaddrinfo: Stack overflow in hostent translation (CVE-2016-3706)
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Sat, 12 Nov 2016 06:44:13 +0000
- Subject: [Bug network/20010] getaddrinfo: Stack overflow in hostent translation (CVE-2016-3706)
- Auto-submitted: auto-generated
- References: <bug-20010-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20010
--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, gentoo/2.23 has been updated
via 6fc2cd54ae7e045ed19033211a289bc6421743af (commit)
from 5237dbe70306a55036334a4dbf3b7abdff0c8877 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6fc2cd54ae7e045ed19033211a289bc6421743af
commit 6fc2cd54ae7e045ed19033211a289bc6421743af
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Apr 29 10:35:34 2016 +0200
CVE-2016-3706: getaddrinfo: stack overflow in hostent conversion [BZ
#20010]
When converting a struct hostent response to struct gaih_addrtuple, the
gethosts macro (which is called from gaih_inet) used alloca, without
malloc fallback for large responses. This commit changes this code to
use calloc unconditionally.
This commit also consolidated a second hostent-to-gaih_addrtuple
conversion loop (in gaih_inet) to use the new conversion function.
(cherry picked from commit 4ab2ab03d4351914ee53248dc5aef4a8c88ff8b9)
(cherry picked from commit 1a8a7c12950a0026a3c406a7cb1608f96aa1460e)
-----------------------------------------------------------------------
Summary of changes:
sysdeps/posix/getaddrinfo.c | 130 +++++++++++++++++++++++--------------------
1 files changed, 69 insertions(+), 61 deletions(-)
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