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xemu/slirp
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Fam Zheng 6e157a0339 slirp: Add sanity check for str option length 
When user provides a long domainname or hostname that doesn't fit in the
DHCP packet, we mustn't overflow the response packet buffer. Instead,
report errors, following the g_warning() in the slirp->vdnssearch
branch.

Also check the strlen against 256 when initializing slirp, which limit
is also from the protocol where one byte represents the string length.
This gives an early error before the warning which is harder to notice
or diagnose.

Reported-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Fam Zheng <famz@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
 		2018-10-21 21:22:17 +02:00
..
COPYRIGHT Remove the advertising clause from the slirp license 2009-01-26 19:37:41 +00:00
Makefile.objs slirp: add a fake NC-SI backend 2017-04-25 19:17:25 +08:00
arp_table.c slirp/debug: Print IP addresses in human readable form 2018-05-31 21:19:24 +02:00
bootp.c slirp: Add sanity check for str option length 2018-10-21 21:22:17 +02:00
bootp.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
cksum.c Use #include "..." for our own headers, <...> for others 2016-07-12 16:19:16 +02:00
debug.h slirp: Cleanup and basic reanimation of debug code 2009-06-29 08:52:46 -05:00
dhcpv6.c slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
dhcpv6.h slirp: add in6_dhcp_multicast() 2018-01-14 18:16:13 +01:00
dnssearch.c slirp: Use DIV_ROUND_UP 2016-06-07 18:19:25 +03:00
if.c slirp: Add a special case for the NULL socket 2017-09-24 20:04:09 +02:00
if.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ip.h slirp: removed unused code 2018-01-14 18:16:13 +01:00
ip6.h slirp: use DIV_ROUND_UP 2017-07-15 14:28:25 +02:00
ip6_icmp.c qemu-timer: avoid checkpoints for virtual clock timers in external subsystems 2018-10-19 13:44:03 +02:00
ip6_icmp.h Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
ip6_input.c slirp: Allow disabling IPv4 or IPv6 2016-04-01 17:51:55 +02:00
ip6_output.c slirp: Adding IPv6, ICMPv6 Echo and NDP autoconfiguration 2016-03-15 10:35:00 +01:00
ip_icmp.c slirp: fix ICMP handling on macOS hosts 2018-10-07 19:40:30 +02:00
ip_icmp.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ip_input.c Use #include "..." for our own headers, <...> for others 2016-07-12 16:19:16 +02:00
ip_output.c Use #include "..." for our own headers, <...> for others 2016-07-12 16:19:16 +02:00
libslirp.h slirp: Add domainname option to slirp's DHCP server 2018-05-31 21:19:08 +02:00
main.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
mbuf.c slirp: document mbuf pointers and sizes 2018-10-07 19:40:30 +02:00
mbuf.h slirp: document mbuf pointers and sizes 2018-10-07 19:40:30 +02:00
misc.c slirp: fork_exec(): Don't close() a negative number in fork_exec() 2017-07-15 14:28:25 +02:00
misc.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
ncsi-pkt.h slirp: add a fake NC-SI backend 2017-04-25 19:17:25 +08:00
ncsi.c slirp/ncsi: add checksum support 2018-05-31 21:19:24 +02:00
ndp_table.c slirp: avoid IN6_IS_ADDR_UNSPECIFIED(), rather use in6_zero() 2018-01-14 18:16:13 +01:00
sbuf.c slirp: Handle error returns from sosendoob() 2017-07-15 14:28:25 +02:00
sbuf.h slirp: VMStatify sbuf 2017-04-29 18:44:16 +02:00
slirp.c slirp: Send window updates to guest after window was closed 2018-05-31 21:19:24 +02:00
slirp.h slirp: Add domainname option to slirp's DHCP server 2018-05-31 21:19:08 +02:00
slirp_config.h slirp: Remove obsolete backward-compatibility cruft 2016-05-16 20:58:47 +02:00
socket.c slirp: Propagate host TCP RST packet to the guest after socket disconnected 2018-10-07 19:50:48 +02:00
socket.h slirp: VMStatify socket level 2017-04-29 18:44:16 +02:00
tcp.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
tcp_input.c slirp: Fix wrong mss bug. 2017-05-27 23:34:47 +02:00
tcp_output.c slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
tcp_subr.c slirp: disable Nagle in outgoing connections 2018-05-31 21:19:24 +02:00
tcp_timer.c slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
tcp_timer.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
tcp_var.h slirp: VMState conversion; tcpcb 2017-04-29 18:44:16 +02:00
tcpip.h slirp, disas: Replace min/max with MIN/MAX macros 2016-12-20 23:55:19 +01:00
tftp.c slirp: tftp, copy sockaddr_size 2017-04-29 18:29:58 +02:00
tftp.h slirp: support dynamic block size for TFTP transfers 2016-12-21 00:02:15 +01:00
udp.c slirp/debug: Print IP addresses in human readable form 2018-05-20 08:25:23 +03:00
udp.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
udp6.c slirp: add in6_dhcp_multicast() 2018-01-14 18:16:13 +01:00