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Bug 1703936 New coverity/cpp scanner errors.
Redhat has run our scanners on the full NSS tree and identifed 123
errors our security team determined where 'critical'. I've reviewed
the errors and identified a much smaller subset of errors that are
either real, or confusing enough to warrent suppression comments.
Many errors are in cmd and gtest. I've skip those commands red hat does
not ship in this report, and I've skipped the issues in gtest.
Also, There's a large number of leaked_storage errors because evidently
coverity gets confused when you have a pointer in a local variable and
you pass that pointer off to a global or a function variable. I've
skipped most of those as well.
changes:
crlutil.c: add missing arena free in error path. #def4
secutil.c: (Not coverity found) make sure we don't overflow our buffer
in badly encoded ECC oids.
modultil.c: Fix incorrect free operation in pk11install case. #def6
signtool/javascript.c: free old archiveDir after use in PR_smprintf #def8
don't double free curitem (curitem is almost
certainly NULL at this point, so the current code
is a noop). #def9, #def10
signtool/list.c: remove unused ugly_list variable (which is leaked) #def12
signtool/util.c: don't leak 'dir' in error path #def13 #def14
sigver/pk7print.c: coverity: use static pk rather than an allocated and
leaked pointer. #def15
add code for EC
disbled DSA code that isn't actually working
(PQG params).
symkeyutil.c: free name (depends on PORT_Free null check). #def16
pkix_pl_nameconstraints.c: Fix coverity double free warning.
PKIX_ERROR_RECEIVED is almost
certainly false in this case, but by
setting arena to NULL we make
sure it's not used or freed again. #def99
pkix_pl_string.c: Fix varargs leak in the error path. #def109
pk11parse.c: secmod_doDescCopy can reallocate our newSpec, but the
pointer we are passed is an offset from newSpec. Pass in
both pointers and return our newly allocated spec and
length in that case.#def113
cmsutil.c: suppress cppcheck warnings do to cmsutil use of unions to
cast pointers. #def113-117
pkcs11.c: support coverity incorrect use_after_free warning. #def118
scanner errors:
Error: USE_AFTER_FREE (CWE-416): [#def4]
nss-3.60.1/nss/cmd/crlutil/crlutil.c:389: freed_arg: "PORT_FreeArena_Util" frees "modArena".
nss-3.60.1/nss/cmd/crlutil/crlutil.c:455: double_free: Calling "PORT_FreeArena_Util" frees pointer "modArena" which has already been freed.
453| }
454| if (modArena && (!modCrl || modCrl->arena != modArena)) {
455|-> PORT_FreeArena(modArena, PR_FALSE);
456| }
457| if (modCrl)
Error: BAD_FREE (CWE-590): [#def6]
nss-3.60.1/nss/cmd/modutil/install-ds.c:1046: address_free: "PR_Free" frees address of "_this->forwardCompatible".
1044| Pk11Install_PlatformName_delete(&_this->forwardCompatible[i]);
1045| }
1046|-> PR_Free(&_this->forwardCompatible);
1047| _this->numForwardCompatible = 0;
1048| }
Error: USE_AFTER_FREE (CWE-416): [#def8]
nss-3.60.1/nss/cmd/signtool/javascript.c:1346: freed_arg: "PR_Free" frees "archiveDir".
nss-3.60.1/nss/cmd/signtool/javascript.c:1347: pass_freed_arg: Passing freed pointer "archiveDir" as an argument to "PR_smprintf".
1345| warningCount++;
1346| PR_Free(archiveDir);
1347|-> archiveDir = PR_smprintf("%s.arc", archiveDir);
1348| } else {
1349| PL_strcpy(archiveDir + strlen(archiveDir) - 4, ".arc");
Error: USE_AFTER_FREE (CWE-416): [#def9]
nss-3.60.1/nss/cmd/signtool/javascript.c:1477: alias: Assigning: "entityListTail" = "entityItem". Now both point to the same storage.
nss-3.60.1/nss/cmd/signtool/javascript.c:1477: alias: Assigning: "entityList" = "entityListTail". Now both point to the same storage.
nss-3.60.1/nss/cmd/signtool/javascript.c:1623: alias: Assigning: "curitem" = "entityList". Now both point to the same storage.
nss-3.60.1/nss/cmd/signtool/javascript.c:1651: freed_arg: "PR_Free" frees "entityListTail".
nss-3.60.1/nss/cmd/signtool/javascript.c:1654: double_free: Calling "PR_Free" frees pointer "curitem" which has already been freed.
1652| }
1653| if (curitem) {
1654|-> PR_Free(curitem);
1655| }
1656| if (basedir) {
Error: USE_AFTER_FREE (CWE-416): [#def10]
nss-3.60.1/nss/cmd/signtool/javascript.c:1477: alias: Assigning: "entityListTail" = "entityItem". Now both point to the same storage.
nss-3.60.1/nss/cmd/signtool/javascript.c:1477: alias: Assigning: "entityList" = "entityListTail". Now both point to the same storage.
nss-3.60.1/nss/cmd/signtool/javascript.c:1623: alias: Assigning: "curitem" = "entityList". Now both point to the same storage.
nss-3.60.1/nss/cmd/signtool/javascript.c:1651: freed_arg: "PR_Free" frees "entityListTail".
nss-3.60.1/nss/cmd/signtool/javascript.c:1654: pass_freed_arg: Passing freed pointer "curitem" as an argument to "PR_Free".
1652| }
1653| if (curitem) {
1654|-> PR_Free(curitem);
1655| }
1656| if (basedir) {
Error: RESOURCE_LEAK (CWE-772): [#def12]
nss-3.60.1/nss/cmd/signtool/list.c:36: alloc_fn: Storage is returned from allocation function "PORT_ZAlloc_Util".
nss-3.60.1/nss/cmd/signtool/list.c:36: var_assign: Assigning: "ugly_list" = storage returned from "PORT_ZAlloc_Util(16UL)".
nss-3.60.1/nss/cmd/signtool/list.c:137: leaked_storage: Variable "ugly_list" going out of scope leaks the storage it points to.
135|
136| if (failed) {
137|-> return -1;
138| }
139| return 0;
Error: RESOURCE_LEAK (CWE-772): [#def13]
nss-3.60.1/nss/cmd/signtool/util.c:131: alloc_fn: Storage is returned from allocation function "PR_OpenDir".
nss-3.60.1/nss/cmd/signtool/util.c:131: var_assign: Assigning: "dir" = storage returned from "PR_OpenDir(path)".
nss-3.60.1/nss/cmd/signtool/util.c:139: identity_transfer: Passing "dir" as argument 1 to function "PR_ReadDir", which returns an offset off that argument.
nss-3.60.1/nss/cmd/signtool/util.c:139: noescape: Resource "dir" is not freed or pointed-to in "PR_ReadDir".
nss-3.60.1/nss/cmd/signtool/util.c:139: var_assign: Assigning: "entry" = storage returned from "PR_ReadDir(dir, PR_SKIP_BOTH)".
nss-3.60.1/nss/cmd/signtool/util.c:142: leaked_storage: Variable "entry" going out of scope leaks the storage it points to.
nss-3.60.1/nss/cmd/signtool/util.c:142: leaked_storage: Variable "dir" going out of scope leaks the storage it points to.
140| if (snprintf(filename, sizeof(filename), "%s/%s", path, entry->name) >= sizeof(filename)) {
141| errorCount++;
142|-> return -1;
143| }
144| if (rm_dash_r(filename))
Error: RESOURCE_LEAK (CWE-772): [#def14]
nss-3.60.1/nss/cmd/signtool/util.c:131: alloc_fn: Storage is returned from allocation function "PR_OpenDir".
nss-3.60.1/nss/cmd/signtool/util.c:131: var_assign: Assigning: "dir" = storage returned from "PR_OpenDir(path)".
nss-3.60.1/nss/cmd/signtool/util.c:139: identity_transfer: Passing "dir" as argument 1 to function "PR_ReadDir", which returns an offset off that argument.
nss-3.60.1/nss/cmd/signtool/util.c:139: noescape: Resource "dir" is not freed or pointed-to in "PR_ReadDir".
nss-3.60.1/nss/cmd/signtool/util.c:139: var_assign: Assigning: "entry" = storage returned from "PR_ReadDir(dir, PR_SKIP_BOTH)".
nss-3.60.1/nss/cmd/signtool/util.c:145: leaked_storage: Variable "entry" going out of scope leaks the storage it points to.
nss-3.60.1/nss/cmd/signtool/util.c:145: leaked_storage: Variable "dir" going out of scope leaks the storage it points to.
143| }
144| if (rm_dash_r(filename))
145|-> return -1;
146| }
147|
Error: RESOURCE_LEAK (CWE-772): [#def15]
nss-3.60.1/nss/cmd/signver/pk7print.c:325: alloc_fn: Storage is returned from allocation function "PORT_ZAlloc_Util".
nss-3.60.1/nss/cmd/signver/pk7print.c:325: var_assign: Assigning: "pk" = storage returned from "PORT_ZAlloc_Util(328UL)".
nss-3.60.1/nss/cmd/signver/pk7print.c:351: leaked_storage: Variable "pk" going out of scope leaks the storage it points to.
349| default:
350| fprintf(out, "%s=bad SPKI algorithm type\n", msg);
351|-> return 0;
352| }
353|
Error: RESOURCE_LEAK (CWE-772): [#def16]
nss-3.60.1/nss/cmd/symkeyutil/symkeyutil.c:289: alloc_fn: Storage is returned from allocation function "PK11_GetSymKeyNickname".
nss-3.60.1/nss/cmd/symkeyutil/symkeyutil.c:289: var_assign: Assigning: "name" = storage returned from "PK11_GetSymKeyNickname(symKey)".
nss-3.60.1/nss/cmd/symkeyutil/symkeyutil.c:298: noescape: Resource "name ? name : " "" is not freed or pointed-to in "printf". [Note: The source code implementation of the function has been overridden by a builtin model.]
nss-3.60.1/nss/cmd/symkeyutil/symkeyutil.c:306: leaked_storage: Variable "name" going out of scope leaks the storage it points to.
304| }
305| printf("\n");
306|-> }
307|
308| SECStatus
Error: USE_AFTER_FREE (CWE-416): [#def99]
nss-3.60.1/nss/lib/libpkix/pkix_pl_nss/pki/pkix_pl_nameconstraints.c:835: freed_arg: "PORT_FreeArena_Util" frees "arena".
nss-3.60.1/nss/lib/libpkix/pkix_pl_nss/pki/pkix_pl_nameconstraints.c:854: double_free: Calling "PORT_FreeArena_Util" frees pointer "arena" which has already been freed.
852| PKIX_CERTNAMECONSTRAINTS_DEBUG
853| ("\t\tCalling PORT_FreeArena).\n");
854|-> PORT_FreeArena(arena, PR_FALSE);
855| }
856| }
Error: VARARGS (CWE-237): [#def109]
nss-3.60.1/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_string.c:428: va_init: Initializing va_list "args".
nss-3.60.1/nss/lib/libpkix/pkix_pl_nss/system/pkix_pl_string.c:534: missing_va_end: "va_end" was not called for "args".
532| }
533|
534|-> PKIX_RETURN(STRING);
535| }
536|
Error: USE_AFTER_FREE (CWE-416): [#def112]
nss-3.60.1/nss/lib/pk11wrap/pk11pars.c:1099: alias: Assigning: "newSpecPtr" = "newSpec". Now both point to the same storage.
nss-3.60.1/nss/lib/pk11wrap/pk11pars.c:1156: freed_arg: "secmod_doDescCopy" frees "newSpecPtr".
nss-3.60.1/nss/lib/pk11wrap/pk11pars.c:1211: use_after_free: Using freed pointer "newSpec".
1209| /* no target found, return the newSpec */
1210| if (target == NULL) {
1211|-> return newSpec;
1212| }
1213|
Error: CPPCHECK_WARNING (CWE-562): [#def113]
nss-3.60.1/nss/lib/smime/cmsutil.c:309: error[returnDanglingLifetime]: Returning pointer to local variable 'digestedData' that will be invalid when returning.
307| }
308| }
309|-> return cinfo;
310| }
311|
Error: CPPCHECK_WARNING (CWE-562): [#def114]
nss-3.60.1/nss/lib/smime/cmsutil.c:309: error[returnDanglingLifetime]: Returning pointer to local variable 'encryptedData' that will be invalid when returning.
307| }
308| }
309|-> return cinfo;
310| }
311|
Error: CPPCHECK_WARNING (CWE-562): [#def115]
nss-3.60.1/nss/lib/smime/cmsutil.c:309: error[returnDanglingLifetime]: Returning pointer to local variable 'envelopedData' that will be invalid when returning.
307| }
308| }
309|-> return cinfo;
310| }
311|
Error: CPPCHECK_WARNING (CWE-562): [#def116]
nss-3.60.1/nss/lib/smime/cmsutil.c:309: error[returnDanglingLifetime]: Returning pointer to local variable 'genericData' that will be invalid when returning.
307| }
308| }
309|-> return cinfo;
310| }
311|
Error: CPPCHECK_WARNING (CWE-562): [#def117]
nss-3.60.1/nss/lib/smime/cmsutil.c:309: error[returnDanglingLifetime]: Returning pointer to local variable 'signedData' that will be invalid when returning.
307| }
308| }
309|-> return cinfo;
310| }
311|
Error: USE_AFTER_FREE (CWE-416): [#def118]
nss-3.60.1/nss/lib/softoken/pkcs11.c:2671: freed_arg: "PORT_Realloc_Util" frees "oldNscSlotList".
nss-3.60.1/nss/lib/softoken/pkcs11.c:2674: use_after_free: Using freed pointer "oldNscSlotList".
2672| nscSlotListSize[index] * sizeof(CK_SLOT_ID));
2673| if (nscSlotList[index] == NULL) {
2674|-> nscSlotList[index] = oldNscSlotList;
2675| nscSlotListSize[index] = oldNscSlotListSize;
2676| return CKR_HOST_MEMORY;
Some of these are false positives, but they are reasonable issues for the scanners to flag, so scanner suppression comments, along with human reviewer comments will be added.
Differential Revision: https://phabricator.services.mozilla.com/D111339
--HG--
extra : rebase_source : 45ad7590affb7fdb8a0e182e29c6c88f909ff260- Loading branch information
