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Merge pull request #68 from raboof/fix-stack-buffer-overflow

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Fix stack buffer overflow
This commit is contained in:
Arnout Engelen
2016-03-31 08:01:33 +02:00
parent a2329643f6 db2da627df
commit d9ade498e8
4 changed files with 7 additions and 8 deletions
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2
src/MakeApp.mk
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@@ -5,7 +5,7 @@ all: nethogs decpcap_test
# nethogs_testsum
CFLAGS?=-Wall -Wextra
CXXFLAGS?=-Wall -Wextra
CXXFLAGS?=-Wall -Wextra -Wno-missing-field-initializers
OBJS=packet.o connection.o process.o decpcap.o cui.o inode2prog.o conninode.o devices.o

4
src/MakeLib.mk
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@@ -23,12 +23,12 @@ ifeq ($(DEBUG),1)
$(info Bulding debug version)
ODIR:=$(ODIR_BASE)/lib/debug
CFLAGS?=-Wall -Wextra -O0 -g -fPIC $(VISIBILITY)
CXXFLAGS?=-Wall -Wextra --std=c++0x -O0 -g -fPIC $(VISIBILITY) $(CXXINCLUDES)
CXXFLAGS?=-Wall -Wextra -Wno-missing-field-initializers --std=c++0x -O0 -g -fPIC $(VISIBILITY) $(CXXINCLUDES)
else
# Release mode options
ODIR:=$(ODIR_BASE)/lib/release
CFLAGS?=-Wall -Wextra -O3 -fPIC $(VISIBILITY)
CXXFLAGS?=-Wall -Wextra --std=c++0x -O3 -fPIC $(VISIBILITY) $(CXXINCLUDES)
CXXFLAGS?=-Wall -Wextra -Wno-missing-field-initializers --std=c++0x -O3 -fPIC $(VISIBILITY) $(CXXINCLUDES)
endif
OBJ_NAMES= libnethogs.o packet.o connection.o process.o decpcap.o inode2prog.o conninode.o devices.o

8
src/conninode.cpp
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@@ -60,8 +60,8 @@ std::map<std::string, unsigned long> conninode;
*/
void addtoconninode(char *buffer) {
short int sa_family;
struct in6_addr result_addr_local;
struct in6_addr result_addr_remote;
struct in6_addr result_addr_local = {};
struct in6_addr result_addr_remote = {};
char rem_addr[128], local_addr[128];
int local_port, rem_port;
@@ -102,8 +102,8 @@ void addtoconninode(char *buffer) {
if ((in6_local.s6_addr32[0] == 0x0) && (in6_local.s6_addr32[1] == 0x0) &&
(in6_local.s6_addr32[2] == 0xFFFF0000)) {
/* IPv4-compatible address */
result_addr_local = *((struct in6_addr *)&(in6_local.s6_addr32[3]));
result_addr_remote = *((struct in6_addr *)&(in6_remote.s6_addr32[3]));
result_addr_local.s6_addr32[0] = in6_local.s6_addr32[3];
result_addr_remote.s6_addr32[0] = in6_remote.s6_addr32[3];
sa_family = AF_INET;
} else {
/* real IPv6 address */

1
src/packet.cpp
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@@ -124,7 +124,6 @@ struct tcp_hdr {
#define TH_URG 0x20
#define TH_ECE 0x40
#define TH_CWR 0x80
#define TH_FLAGS (TH_FIN | TH_SYN | TH_RST | TH_ACK | TH_URG | TH_ECE | TH_CWR)
u_short th_win; /* window */
u_short th_sum; /* checksum */
u_short th_urp; /* urgent pointer */