Date: Wed, 5 Aug 2015 22:04:57 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r286347 - head/sbin/routed Message-ID: <201508052204.t75M4vCp063341@repo.freebsd.org>
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Author: delphij Date: Wed Aug 5 22:04:56 2015 New Revision: 286347 URL: https://svnweb.freebsd.org/changeset/base/286347 Log: Fix a bug which could make routed(8) daemon exit by sending a special RIP query from a remote machine, similar to SA-14:21.routed. Submitted by: hrs Modified: head/sbin/routed/input.c Modified: head/sbin/routed/input.c ============================================================================== --- head/sbin/routed/input.c Wed Aug 5 22:04:54 2015 (r286346) +++ head/sbin/routed/input.c Wed Aug 5 22:04:56 2015 (r286347) @@ -160,6 +160,12 @@ input(struct sockaddr_in *from, /* rece trace_rip("Recv", "from", from, sifp, rip, cc); + if (sifp == 0) { + trace_pkt(" discard a request from an indirect router" + " (possibly an attack)"); + return; + } + if (rip->rip_vers == 0) { msglim(&bad_router, FROM_NADDR, "RIP version 0, cmd %d, packet received from %s",
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