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Fix couple of cases where incorrect handling of keyword parsing errors would lead to access of uninitialized memory. Found by clang.

Browse Source
remotes/origin/master-1.1.x
Victor Julien 15 years ago
parent 7dc4b164a8
commit 3f47eade6b
8 changed files with 63 additions and 34 deletions
Show Stats Download Patch File Download Diff File

14
src/detect-flow.c
Unescape Escape View File

@ -164,6 +164,7 @@ DetectFlowData *DetectFlowParse (char *flowstr)
SCLogError(SC_ERR_PCRE_MATCH, "parse error, ret %" PRId32 ", string %s", ret, flowstr);
goto error;
}
if (ret > 1) {
const char *str_ptr;
res = pcre_get_substring((char *)flowstr, ov, MAX_SUBSTRINGS, 1, &str_ptr);
@ -265,15 +266,20 @@ DetectFlowData *DetectFlowParse (char *flowstr)
}
}
for (i = 0; i < (ret -1); i++){
if (args[i] != NULL) SCFree(args[i]);
if (args[i] != NULL)
SCFree(args[i]);
}
return fd;
error:
for (i = 0; i < (ret -1); i++){
if (args[i] != NULL) SCFree(args[i]);
/* ret can be higher than 3 */
for (i = 0; i < (ret - 1) && i < 4; i++){
if (args[i] != NULL)
SCFree(args[i]);
}
if (fd != NULL) DetectFlowFree(fd);
if (fd != NULL)
DetectFlowFree(fd);
return NULL;
}

11
src/detect-icode.c
Unescape Escape View File

@ -197,15 +197,18 @@ DetectICodeData *DetectICodeParse(char *icodestr) {
}
for (i = 0; i < (ret-1); i++) {
if (args[i] != NULL) SCFree(args[i]);
if (args[i] != NULL)
SCFree(args[i]);
}
return icd;
error:
for (i = 0; i < (ret-1); i++) {
if (args[i] != NULL) SCFree(args[i]);
for (i = 0; i < (ret-1) && i < 4; i++) {
if (args[i] != NULL)
SCFree(args[i]);
}
if (icd != NULL) DetectICodeFree(icd);
if (icd != NULL)
DetectICodeFree(icd);
return NULL;
}

12
src/detect-ipproto.c
Unescape Escape View File

@ -114,6 +114,7 @@ static DetectIPProtoData *DetectIPProtoParse(const char *optstr)
SCLogError(SC_ERR_PCRE_MATCH, "pcre_exec parse error, ret %" PRId32 ", string %s", ret, optstr);
goto error;
}
for (i = 0; i < (ret - 1); i++) {
res = pcre_get_substring((char *)optstr, ov, MAX_SUBSTRINGS,
i + 1, &str_ptr);
@ -153,15 +154,18 @@ static DetectIPProtoData *DetectIPProtoParse(const char *optstr)
}
for (i = 0; i < (ret - 1); i++){
if (args[i] != NULL) SCFree(args[i]);
if (args[i] != NULL)
SCFree(args[i]);
}
return data;
error:
for (i = 0; i < (ret - 1); i++){
if (args[i] != NULL) SCFree(args[i]);
for (i = 0; i < (ret - 1) && i < 3; i++){
if (args[i] != NULL)
SCFree(args[i]);
}
if (data != NULL) SCFree(data);
if (data != NULL)
SCFree(data);
return NULL;
}

11
src/detect-isdataat.c
Unescape Escape View File

@ -201,7 +201,8 @@ DetectIsdataatData *DetectIsdataatParse (char *isdataatstr)
}
for (i = 0; i < (ret -1); i++) {
if (args[i] != NULL) SCFree(args[i]);
if (args[i] != NULL)
SCFree(args[i]);
}
return idad;
@ -210,11 +211,13 @@ DetectIsdataatData *DetectIsdataatParse (char *isdataatstr)
error:
for (i = 0; i < (ret -1); i++){
if (args[i] != NULL) SCFree(args[i]);
for (i = 0; i < (ret -1) && i < 4; i++){
if (args[i] != NULL)
SCFree(args[i]);
}
if (idad != NULL) DetectIsdataatFree(idad);
if (idad != NULL)
DetectIsdataatFree(idad);
return NULL;
}

11
src/detect-itype.c
Unescape Escape View File

@ -197,15 +197,18 @@ DetectITypeData *DetectITypeParse(char *itypestr) {
}
for (i = 0; i < (ret-1); i++) {
if (args[i] != NULL) SCFree(args[i]);
if (args[i] != NULL)
SCFree(args[i]);
}
return itd;
error:
for (i = 0; i < (ret-1); i++) {
if (args[i] != NULL) SCFree(args[i]);
for (i = 0; i < (ret-1) && i < 4; i++) {
if (args[i] != NULL)
SCFree(args[i]);
}
if (itd != NULL) DetectITypeFree(itd);
if (itd != NULL)
DetectITypeFree(itd);
return NULL;
}

12
src/detect-rpc.c
Unescape Escape View File

@ -171,6 +171,7 @@ DetectRpcData *DetectRpcParse (char *rpcstr)
SCLogError(SC_ERR_PCRE_MATCH, "parse error, ret %" PRId32 ", string %s", ret, rpcstr);
goto error;
}
if (ret > 1) {
const char *str_ptr;
res = pcre_get_substring((char *)rpcstr, ov, MAX_SUBSTRINGS, 1, &str_ptr);
@ -242,15 +243,18 @@ DetectRpcData *DetectRpcParse (char *rpcstr)
}
}
for (i = 0; i < (ret -1); i++){
if (args[i] != NULL) SCFree(args[i]);
if (args[i] != NULL)
SCFree(args[i]);
}
return rd;
error:
for (i = 0; i < (ret -1); i++){
if (args[i] != NULL) SCFree(args[i]);
for (i = 0; i < (ret -1) && i < 4; i++){
if (args[i] != NULL)
SCFree(args[i]);
}
if (rd != NULL) DetectRpcFree(rd);
if (rd != NULL)
DetectRpcFree(rd);
return NULL;
}

12
src/detect-window.c
Unescape Escape View File

@ -142,7 +142,6 @@ DetectWindowData *DetectWindowParse(char *windowstr) {
if (wd == NULL)
goto error;
if (ret > 1) {
const char *str_ptr;
res = pcre_get_substring((char *)windowstr, ov, MAX_SUBSTRINGS, 1, &str_ptr);
@ -173,15 +172,18 @@ DetectWindowData *DetectWindowParse(char *windowstr) {
int i = 0;
for (i = 0; i < (ret -1); i++){
if (args[i] != NULL) SCFree(args[i]);
if (args[i] != NULL)
SCFree(args[i]);
}
return wd;
error:
for (i = 0; i < (ret -1); i++){
if (args[i] != NULL) SCFree(args[i]);
for (i = 0; i < (ret -1) && i < 4; i++){
if (args[i] != NULL)
SCFree(args[i]);
}
if (wd != NULL) DetectWindowFree(wd);
if (wd != NULL)
DetectWindowFree(wd);
return NULL;
}

6
src/detect.c
Unescape Escape View File

@ -5512,7 +5512,7 @@ static int SigTest20Wm (void) {
static int SigTest21Real (int mpm_type) {
ThreadVars th_v;
memset(&th_v, 0, sizeof(th_v));
DetectEngineThreadCtx *det_ctx;
DetectEngineThreadCtx *det_ctx = NULL;
int result = 0;
Flow f;
@ -5572,10 +5572,14 @@ static int SigTest21Real (int mpm_type) {
result = 1;
end:
if (de_ctx != NULL) {
SigGroupCleanup(de_ctx);
SigCleanSignatures(de_ctx);
if (det_ctx != NULL) {
DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
}
}
DetectEngineCtxFree(de_ctx);
UTHFreePackets(&p1, 1);
UTHFreePackets(&p2, 1);

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