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wolfcrypt/src/pkcs7.c: in wc_PKCS7_BuildSignedAttributes(), clear cannedAttribs[idx] before it's conditionally populated, to prevent possible uninited data read in subsequent EncodeAttributes().

pull/8339/head
Daniel Pouzzner 2025-01-07 15:03:18 -06:00
parent 8c32238733
commit b6ce89c429
1 changed files with 2 additions and 0 deletions
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wolfcrypt/src/pkcs7.c
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@ -2073,6 +2073,8 @@ static int wc_PKCS7_BuildSignedAttributes(wc_PKCS7* pkcs7, ESD* esd,
cannedAttribsCount = sizeof(cannedAttribs)/sizeof(PKCS7Attrib);
XMEMSET(&cannedAttribs[idx], 0, sizeof(cannedAttribs[idx]));
if ((pkcs7->defaultSignedAttribs & WOLFSSL_CONTENT_TYPE_ATTRIBUTE) ||
pkcs7->defaultSignedAttribs == 0) {
cannedAttribs[idx].oid = contentTypeOid;