e7ac2539cf
CVE-2023-0767 nss: Mozilla: Arbitrary memory write via PKCS 12 in NSS
93 lines
3.0 KiB
Diff
93 lines
3.0 KiB
Diff
diff --git a/lib/pkcs12/p12d.c b/lib/pkcs12/p12d.c
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--- a/lib/pkcs12/p12d.c
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+++ b/lib/pkcs12/p12d.c
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@@ -335,35 +335,42 @@
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sec_PKCS12SafeContentsContext *safeContentsCtx =
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(sec_PKCS12SafeContentsContext *)arg;
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SEC_PKCS12DecoderContext *p12dcx;
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SECStatus rv;
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- /* make sure that we are not skipping the current safeBag,
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- * and that there are no errors. If so, just return rather
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- * than continuing to process.
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- */
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- if (!safeContentsCtx || !safeContentsCtx->p12dcx ||
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- safeContentsCtx->p12dcx->error || safeContentsCtx->skipCurrentSafeBag) {
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+ if (!safeContentsCtx || !safeContentsCtx->p12dcx || !safeContentsCtx->currentSafeBagA1Dcx) {
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return;
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}
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p12dcx = safeContentsCtx->p12dcx;
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+ /* make sure that there are no errors and we are not skipping the current safeBag */
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+ if (p12dcx->error || safeContentsCtx->skipCurrentSafeBag) {
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+ goto loser;
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+ }
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+
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rv = SEC_ASN1DecoderUpdate(safeContentsCtx->currentSafeBagA1Dcx, data, len);
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if (rv != SECSuccess) {
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p12dcx->errorValue = PORT_GetError();
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+ p12dcx->error = PR_TRUE;
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+ goto loser;
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+ }
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+
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+ /* The update may have set safeContentsCtx->skipCurrentSafeBag, and we
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+ * may not get another opportunity to clean up the decoder context.
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+ */
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+ if (safeContentsCtx->skipCurrentSafeBag) {
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goto loser;
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}
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return;
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loser:
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- /* set the error, and finish the decoder context. because there
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+ /* Finish the decoder context. Because there
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* is not a way of returning an error message, it may be worth
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* while to do a check higher up and finish any decoding contexts
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* that are still open.
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*/
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- p12dcx->error = PR_TRUE;
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SEC_ASN1DecoderFinish(safeContentsCtx->currentSafeBagA1Dcx);
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safeContentsCtx->currentSafeBagA1Dcx = NULL;
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return;
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}
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diff --git a/lib/pkcs12/p12t.h b/lib/pkcs12/p12t.h
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--- a/lib/pkcs12/p12t.h
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+++ b/lib/pkcs12/p12t.h
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@@ -71,10 +71,11 @@
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SECKEYEncryptedPrivateKeyInfo *pkcs8ShroudedKeyBag;
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sec_PKCS12CertBag *certBag;
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sec_PKCS12CRLBag *crlBag;
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sec_PKCS12SecretBag *secretBag;
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sec_PKCS12SafeContents *safeContents;
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+ SECItem *unknownBag;
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} safeBagContent;
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sec_PKCS12Attribute **attribs;
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/* used locally */
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diff --git a/lib/pkcs12/p12tmpl.c b/lib/pkcs12/p12tmpl.c
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--- a/lib/pkcs12/p12tmpl.c
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+++ b/lib/pkcs12/p12tmpl.c
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@@ -28,16 +28,16 @@
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safeBag = (sec_PKCS12SafeBag *)src_or_dest;
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oiddata = SECOID_FindOID(&safeBag->safeBagType);
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if (oiddata == NULL) {
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- return SEC_ASN1_GET(SEC_AnyTemplate);
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+ return SEC_ASN1_GET(SEC_PointerToAnyTemplate);
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}
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switch (oiddata->offset) {
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default:
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- theTemplate = SEC_ASN1_GET(SEC_AnyTemplate);
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+ theTemplate = SEC_ASN1_GET(SEC_PointerToAnyTemplate);
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break;
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case SEC_OID_PKCS12_V1_KEY_BAG_ID:
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theTemplate = SEC_ASN1_GET(SECKEY_PointerToPrivateKeyInfoTemplate);
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break;
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case SEC_OID_PKCS12_V1_CERT_BAG_ID:
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