diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2012-02-08 10:05:45 +0100 |
|---|---|---|
| committer | Jan Kiszka <jan.kiszka@siemens.com> | 2012-02-08 10:07:54 +0100 |
| commit | 6612db12d56c68fff3e56ca4ea8c41d9d55c12e4 (patch) | |
| tree | 7f3ac2fd1fedb13094d6d61d3b20fa2709143951 | |
| parent | 9f1134d4aac64ea427453fc7c7f8cab39f4fe3da (diff) | |
slirp: Prevent sending ICMP error replies to source-only addresses
This triggered the related assert in arp_table_search.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
| -rw-r--r-- | slirp/ip_icmp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/slirp/ip_icmp.c b/slirp/ip_icmp.c index 4b43994dbc..5dbf21da9d 100644 --- a/slirp/ip_icmp.c +++ b/slirp/ip_icmp.c @@ -262,6 +262,11 @@ icmp_error(struct mbuf *msrc, u_char type, u_char code, int minsize, #endif if(ip->ip_off & IP_OFFMASK) goto end_error; /* Only reply to fragment 0 */ + /* Do not reply to source-only IPs */ + if ((ip->ip_src.s_addr & htonl(~(0xf << 28))) == 0) { + goto end_error; + } + shlen=ip->ip_hl << 2; s_ip_len=ip->ip_len; if(ip->ip_p == IPPROTO_ICMP) { |