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| author | Marcel Holtmann <marcel@holtmann.org> | 2006-05-29 07:50:18 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-05-29 07:50:18 +0200 |
| commit | 6c813c3fe9e30fcf3c4d94d2ba24108babd745b0 (patch) | |
| tree | 05420eaf319033bb5aad5a66b0f97e54ca2f896e | |
| parent | Merge branch 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/... (diff) | |
| download | linux-6c813c3fe9e30fcf3c4d94d2ba24108babd745b0.tar.xz linux-6c813c3fe9e30fcf3c4d94d2ba24108babd745b0.zip | |
[NETFILTER]: Fix small information leak in SO_ORIGINAL_DST (CVE-2006-1343)
It appears that sockaddr_in.sin_zero is not zeroed during
getsockopt(...SO_ORIGINAL_DST...) operation. This can lead
to an information leak (CVE-2006-1343).
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_core.c | 1 | ||||
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c index 979a2eac6f00..a297da7bbef5 100644 --- a/net/ipv4/netfilter/ip_conntrack_core.c +++ b/net/ipv4/netfilter/ip_conntrack_core.c @@ -1318,6 +1318,7 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len) .tuple.dst.u.tcp.port; sin.sin_addr.s_addr = ct->tuplehash[IP_CT_DIR_ORIGINAL] .tuple.dst.ip; + memset(sin.sin_zero, 0, sizeof(sin.sin_zero)); DEBUGP("SO_ORIGINAL_DST: %u.%u.%u.%u %u\n", NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port)); diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 5bc9f64d7b5b..77d974443c7b 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -348,6 +348,7 @@ getorigdst(struct sock *sk, int optval, void __user *user, int *len) .tuple.dst.u.tcp.port; sin.sin_addr.s_addr = ct->tuplehash[IP_CT_DIR_ORIGINAL] .tuple.dst.u3.ip; + memset(sin.sin_zero, 0, sizeof(sin.sin_zero)); DEBUGP("SO_ORIGINAL_DST: %u.%u.%u.%u %u\n", NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port)); |