diff options
| author | Patrick McHardy <kaber@trash.net> | 2006-01-10 02:00:07 +0100 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2006-01-14 22:15:29 -0800 |
| commit | a81954faaf6fdbf1fd8a1ef03f2d75e01f56a974 (patch) | |
| tree | 83256f69b60a0b5c7e76c33ddf32817594aa272f | |
| parent | e7594b2f2389fab1558fed58507ad3ce7d4eae56 (diff) | |
[PATCH] Fix crash in ip_nat_pptp (CVE-2006-0036)
When an inbound PPTP_IN_CALL_REQUEST packet is received the
PPTP NAT helper uses a NULL pointer in pointer arithmentic to
calculate the offset in the packet which needs to be mangled
and corrupts random memory or crashes.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| -rw-r--r-- | net/ipv4/netfilter/ip_nat_helper_pptp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/netfilter/ip_nat_helper_pptp.c b/net/ipv4/netfilter/ip_nat_helper_pptp.c index e546203f5662..8ad7b36e242d 100644 --- a/net/ipv4/netfilter/ip_nat_helper_pptp.c +++ b/net/ipv4/netfilter/ip_nat_helper_pptp.c @@ -315,7 +315,7 @@ pptp_inbound_pkt(struct sk_buff **pskb, break; case PPTP_IN_CALL_REQUEST: /* only need to nat in case PAC is behind NAT box */ - break; + return NF_ACCEPT; case PPTP_WAN_ERROR_NOTIFY: pcid = &pptpReq->wanerr.peersCallID; break; |