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OPENSSL-LISTEN failed with "no shared cipher" when using cipher aNULL

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This commit is contained in:
Gerhard Rieger 2011-11-22 10:42:38 +01:00
parent 49c0505298
commit 0b472d59d2
3 changed files with 93 additions and 1 deletions
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4
CHANGES
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@ -49,6 +49,10 @@ corrections:
were used. Thanks to Tetsuya Sodo for reporting this problem and
sending a patch
OpenSSL server failed with "no shared cipher" when using cipher aNULL.
Fixed by providing temporary DH parameters. Thanks to Philip Rowlands
for drawing my attention to this issue.
####################### V 1.7.1.3:
security:

44
test.sh
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@ -10484,6 +10484,50 @@ esac
N=$((N+1))
NAME=OPENSSL_ANULL
case "$TESTS" in
*%functions%*|*%openssl%*|*%tcp%*|*%tcp4%*|*%ip4%*|*%$NAME%*)
TEST="$NAME: OpenSSL server with cipher aNULL "
if ! eval $NUMCOND; then :;
elif ! testaddrs openssl >/dev/null; then
$PRINTF "test $F_n $TEST... ${YELLOW}OPENSSL not available${NORMAL}\n" $N
numCANT=$((numCANT+1))
elif ! testaddrs listen tcp ip4 >/dev/null || ! runsip4 >/dev/null; then
$PRINTF "test $F_n $TEST... ${YELLOW}TCP/IPv4 not available${NORMAL}\n" $N
numCANT=$((numCANT+1))
else
tf="$td/test$N.stdout"
te="$td/test$N.stderr"
tdiff="$td/test$N.diff"
da="test$N $(date) $RANDOM"
CMD2="$SOCAT $opts OPENSSL-LISTEN:$PORT,reuseaddr,$SOCAT_EGD,ciphers=aNULL,verify=0 pipe"
CMD="$SOCAT $opts - openssl:$LOCALHOST:$PORT,ciphers=aNULL,verify=0,$SOCAT_EGD"
printf "test $F_n $TEST... " $N
eval "$CMD2 2>\"${te}1\" &"
pid=$! # background process id
waittcp4port $PORT
echo "$da" |$CMD >$tf 2>"${te}2"
if ! echo "$da" |diff - "$tf" >"$tdiff"; then
$PRINTF "$FAILED: $SOCAT:\n"
echo "$CMD2 &"
echo "$CMD"
cat "${te}1"
cat "${te}2"
cat "$tdiff"
numFAIL=$((numFAIL+1))
else
$PRINTF "$OK\n"
if [ -n "$debug" ]; then cat "${te}1" "${te}2"; fi
numOK=$((numOK+1))
fi
kill $pid 2>/dev/null
wait
fi ;; # NUMCOND, feats
esac
PORT=$((PORT+1))
N=$((N+1))
###############################################################################
# here come tests that might affect your systems integrity. Put normal tests
# before this paragraph.

46
xio-openssl.c
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@ -1,5 +1,5 @@
/* source: xio-openssl.c */
/* Copyright Gerhard Rieger 2002-2009 */
/* Copyright Gerhard Rieger 2002-2011 */
/* Published under the GNU General Public License V.2, see file COPYING */
/* this file contains the implementation of the openssl addresses */
@ -739,6 +739,50 @@ int
return STAT_RETRYLATER;
}
{
static unsigned char dh512_p[] = {
0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
0x47,0x74,0xE8,0x33,
};
static unsigned char dh512_g[] = {
0x02,
};
DH *dh;
unsigned long err;
if ((dh = DH_new()) == NULL) {
while (err = ERR_get_error()) {
Warn1("DH_new(): %s",
ERR_error_string(err, NULL));
}
Error("DH_new() failed");
} else {
dh->p = BN_bin2bn(dh512_p, sizeof(dh512_p), NULL);
dh->g = BN_bin2bn(dh512_g, sizeof(dh512_g), NULL);
if ((dh->p == NULL) || (dh->g == NULL)) {
while (err = ERR_get_error()) {
Warn1("BN_bin2bn(): %s",
ERR_error_string(err, NULL));
}
Error("BN_bin2bn() failed");
} else {
if (SSL_CTX_set_tmp_dh(*ctx, dh) <= 0) {
while (err = ERR_get_error()) {
Warn1("SSL_CTX_set_tmp_dh(%p, %p): %s",
ERR_error_string(err, NULL));
}
Error2("SSL_CTX_set_tmp_dh(%p, %p) failed", *ctx, dh);
}
/*! OPENSSL_free(dh->p,g)? doc does not tell so */
}
DH_free(dh);
}
}
if (opt_cafile != NULL || opt_capath != NULL) {
if (sycSSL_CTX_load_verify_locations(*ctx, opt_cafile, opt_capath) != 1) {
int result;