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| author | Marcel Holtmann <marcel@holtmann.org> | 2006-05-26 13:50:46 +0200 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2006-05-30 17:31:35 -0700 |
| commit | 11091f6a4a11feb5794aef9307c428838129ea02 (patch) | |
| tree | 24fe6ac74a39eeafc6d9c5ec772698a21b468bff | |
| parent | b7d061792b4c09fe7c290ddccae3f998d5b513c0 (diff) | |
| download | lwn-11091f6a4a11feb5794aef9307c428838129ea02.tar.gz lwn-11091f6a4a11feb5794aef9307c428838129ea02.zip | |
[PATCH] 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: Chris Wright <chrisw@sous-sol.org>
| -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 84c66dbfedaf..43f6b453b2e7 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 6c8624a54933..62a0f5260614 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -354,6 +354,7 @@ 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)); |