Date: 17 Nov 2002 21:54:03 -0000 From: Antti Louko <alo@iki.fi> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/45376: Coding error in /usr/src/contrib/bind/bin/dig/dig.c Message-ID: <20021117215403.28052.qmail@alo.louko.com>
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>Number: 45376
>Category: bin
>Synopsis: Coding error in /usr/src/contrib/bind/bin/dig/dig.c
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Nov 17 14:00:12 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Antti Louko
>Release: FreeBSD 4.6.2-RELEASE i386
>Organization:
>Environment:
System: FreeBSD xxxx.louko.com 4.6.2-RELEASE FreeBSD 4.6.2-RELEASE #4: Tue Oct 22 21:29:10 EEST 2002 root@alo.louko.com:/u9/src/sys/compile/ALO i386
>Description:
Coding error in /usr/src/contrib/bind/bin/dig/dig.c:
static void
reverse6(char *domain, struct in6_addr *in6) {
sprintf(domain, "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa",
in6->s6_addr[15] & 0x0f, (in6->s6_addr[15] >> 4) & 0x0f,
in6->s6_addr[14] & 0x0f, (in6->s6_addr[14] >> 4) & 0x0f,
in6->s6_addr[13] & 0x0f, (in6->s6_addr[13] >> 4) & 0x0f,
in6->s6_addr[12] & 0x0f, (in6->s6_addr[12] >> 4) & 0x0f,
in6->s6_addr[11] & 0x0f, (in6->s6_addr[11] >> 4) & 0x0f,
in6->s6_addr[10] & 0x0f, (in6->s6_addr[10] >> 4) & 0x0f,
in6->s6_addr[9] & 0x0f, (in6->s6_addr[9] >> 4) & 0x0f,
in6->s6_addr[8] & 0x0f, (in6->s6_addr[8] >> 4) & 0x0f,
in6->s6_addr[7] & 0x0f, (in6->s6_addr[7] >> 4) & 0x0f,
in6->s6_addr[6] & 0x0f, (in6->s6_addr[6] >> 4) & 0x0f,
in6->s6_addr[5] & 0x0f, (in6->s6_addr[5] >> 4) & 0x0f,
in6->s6_addr[4] & 0x0f, (in6->s6_addr[4] >> 4) & 0x0f,
in6->s6_addr[6] & 0x0f, (in6->s6_addr[3] >> 4) & 0x0f,
in6->s6_addr[2] & 0x0f, (in6->s6_addr[2] >> 4) & 0x0f,
in6->s6_addr[1] & 0x0f, (in6->s6_addr[1] >> 4) & 0x0f,
in6->s6_addr[0] & 0x0f, (in6->s6_addr[0] >> 4) & 0x0f);
}
dig doesn't work with -x option and IPv6 aadresses.
>How-To-Repeat:
See wrong ip6.arpa address in ;; QUERY SECTION:
% dig -x 2001:638:a00::2 any
; <<>> DiG 8.3 <<>> -x any
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 2
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;; 2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.a.0.0.3.6.0.1.0.0.2.ip6.arpa, type = ANY, class = IN
>Fix:
Change line
in6->s6_addr[6] & 0x0f, (in6->s6_addr[3] >> 4) & 0x0f,
into
in6->s6_addr[3] & 0x0f, (in6->s6_addr[3] >> 4) & 0x0f,
Report the bug to ISC, too, as it is still in the latest BIND 8 release.
>Release-Note:
>Audit-Trail:
>Unformatted:
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