nss/cve-2023-0767.patch
Bob Relyea e7ac2539cf Resolves: rhbz#2176627
CVE-2023-0767 nss: Mozilla: Arbitrary memory write via PKCS 12 in NSS
2023-03-09 10:56:24 -08:00

93 lines
3.0 KiB
Diff

diff --git a/lib/pkcs12/p12d.c b/lib/pkcs12/p12d.c
--- a/lib/pkcs12/p12d.c
+++ b/lib/pkcs12/p12d.c
@@ -335,35 +335,42 @@
sec_PKCS12SafeContentsContext *safeContentsCtx =
(sec_PKCS12SafeContentsContext *)arg;
SEC_PKCS12DecoderContext *p12dcx;
SECStatus rv;
- /* make sure that we are not skipping the current safeBag,
- * and that there are no errors. If so, just return rather
- * than continuing to process.
- */
- if (!safeContentsCtx || !safeContentsCtx->p12dcx ||
- safeContentsCtx->p12dcx->error || safeContentsCtx->skipCurrentSafeBag) {
+ if (!safeContentsCtx || !safeContentsCtx->p12dcx || !safeContentsCtx->currentSafeBagA1Dcx) {
return;
}
p12dcx = safeContentsCtx->p12dcx;
+ /* make sure that there are no errors and we are not skipping the current safeBag */
+ if (p12dcx->error || safeContentsCtx->skipCurrentSafeBag) {
+ goto loser;
+ }
+
rv = SEC_ASN1DecoderUpdate(safeContentsCtx->currentSafeBagA1Dcx, data, len);
if (rv != SECSuccess) {
p12dcx->errorValue = PORT_GetError();
+ p12dcx->error = PR_TRUE;
+ goto loser;
+ }
+
+ /* The update may have set safeContentsCtx->skipCurrentSafeBag, and we
+ * may not get another opportunity to clean up the decoder context.
+ */
+ if (safeContentsCtx->skipCurrentSafeBag) {
goto loser;
}
return;
loser:
- /* set the error, and finish the decoder context. because there
+ /* Finish the decoder context. Because there
* is not a way of returning an error message, it may be worth
* while to do a check higher up and finish any decoding contexts
* that are still open.
*/
- p12dcx->error = PR_TRUE;
SEC_ASN1DecoderFinish(safeContentsCtx->currentSafeBagA1Dcx);
safeContentsCtx->currentSafeBagA1Dcx = NULL;
return;
}
diff --git a/lib/pkcs12/p12t.h b/lib/pkcs12/p12t.h
--- a/lib/pkcs12/p12t.h
+++ b/lib/pkcs12/p12t.h
@@ -71,10 +71,11 @@
SECKEYEncryptedPrivateKeyInfo *pkcs8ShroudedKeyBag;
sec_PKCS12CertBag *certBag;
sec_PKCS12CRLBag *crlBag;
sec_PKCS12SecretBag *secretBag;
sec_PKCS12SafeContents *safeContents;
+ SECItem *unknownBag;
} safeBagContent;
sec_PKCS12Attribute **attribs;
/* used locally */
diff --git a/lib/pkcs12/p12tmpl.c b/lib/pkcs12/p12tmpl.c
--- a/lib/pkcs12/p12tmpl.c
+++ b/lib/pkcs12/p12tmpl.c
@@ -28,16 +28,16 @@
safeBag = (sec_PKCS12SafeBag *)src_or_dest;
oiddata = SECOID_FindOID(&safeBag->safeBagType);
if (oiddata == NULL) {
- return SEC_ASN1_GET(SEC_AnyTemplate);
+ return SEC_ASN1_GET(SEC_PointerToAnyTemplate);
}
switch (oiddata->offset) {
default:
- theTemplate = SEC_ASN1_GET(SEC_AnyTemplate);
+ theTemplate = SEC_ASN1_GET(SEC_PointerToAnyTemplate);
break;
case SEC_OID_PKCS12_V1_KEY_BAG_ID:
theTemplate = SEC_ASN1_GET(SECKEY_PointerToPrivateKeyInfoTemplate);
break;
case SEC_OID_PKCS12_V1_CERT_BAG_ID: