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Bug 250687

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NSS Crashes or leaks Cert references if bad certs are passed up by PKCS #11 modules.
r=nelson
sr=ian
This commit is contained in:
relyea%netscape.com 2004-07-21 18:18:05 +00:00
parent 1837d24904
commit 7e82fd4194
4 changed files with 90 additions and 65 deletions
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66
security/nss/lib/certdb/stanpcertdb.c
View File

@ -198,7 +198,7 @@ __CERT_AddTempCertToPerm(CERTCertificate *cert, char *nickname,
nssTrustDomain_AddCertsToCache(STAN_GetDefaultTrustDomain(), &c, 1);
/* reset the CERTCertificate fields */
cert->nssCertificate = NULL;
cert = STAN_GetCERTCertificate(c); /* will return same pointer */
cert = STAN_GetCERTCertificateOrRelease(c); /* should return same pointer */
if (!cert) {
return SECFailure;
}
@ -251,7 +251,7 @@ __CERT_NewTempCertificate(CERTCertDBHandle *handle, SECItem *derCert,
PORT_SetError(SEC_ERROR_REUSED_ISSUER_AND_SERIAL);
cc = NULL;
} else {
cc = STAN_GetCERTCertificate(c);
cc = STAN_GetCERTCertificateOrRelease(c);
}
return cc;
}
@ -275,6 +275,8 @@ __CERT_NewTempCertificate(CERTCertDBHandle *handle, SECItem *derCert,
/* Forces a decoding of the cert in order to obtain the parts used
* below
*/
/* 'c' is not adopted here, if we fail loser frees what has been
* allocated so far for 'c' */
cc = STAN_GetCERTCertificate(c);
if (!cc) {
goto loser;
@ -321,7 +323,7 @@ __CERT_NewTempCertificate(CERTCertDBHandle *handle, SECItem *derCert,
if (tempCert) {
/* and use the "official" entry */
c = tempCert;
cc = STAN_GetCERTCertificate(c);
cc = STAN_GetCERTCertificateOrRelease(c);
if (!cc) {
return NULL;
}
@ -392,24 +394,12 @@ CERT_FindCertByName(CERTCertDBHandle *handle, SECItem *name)
NULL, &usage, NULL);
c = get_best_temp_or_perm(ct, cp);
if (ct) {
CERTCertificate *cert = STAN_GetCERTCertificate(ct);
if (!cert) {
return NULL;
}
CERT_DestroyCertificate(cert);
CERT_DestroyCertificate(STAN_GetCERTCertificateOrRelease(ct));
}
if (cp) {
CERTCertificate *cert = STAN_GetCERTCertificate(cp);
if (!cert) {
return NULL;
}
CERT_DestroyCertificate(cert);
}
if (c) {
return STAN_GetCERTCertificate(c);
} else {
return NULL;
CERT_DestroyCertificate(STAN_GetCERTCertificateOrRelease(cp));
}
return c ? STAN_GetCERTCertificateOrRelease(c) : NULL;
}
CERTCertificate *
@ -458,20 +448,12 @@ CERT_FindCertByNickname(CERTCertDBHandle *handle, char *nickname)
c = get_best_temp_or_perm(ct, STAN_GetNSSCertificate(cert));
CERT_DestroyCertificate(cert);
if (ct) {
CERTCertificate *cert2 = STAN_GetCERTCertificate(ct);
if (!cert2) {
return NULL;
}
CERT_DestroyCertificate(cert2);
CERT_DestroyCertificate(STAN_GetCERTCertificateOrRelease(ct));
}
} else {
c = ct;
}
if (c) {
return STAN_GetCERTCertificate(c);
} else {
return NULL;
}
return c ? STAN_GetCERTCertificateOrRelease(c) : NULL;
}
CERTCertificate *
@ -488,7 +470,7 @@ CERT_FindCertByDERCert(CERTCertDBHandle *handle, SECItem *derCert)
&encoding);
if (!c) return NULL;
}
return STAN_GetCERTCertificate(c);
return STAN_GetCERTCertificateOrRelease(c);
}
CERTCertificate *
@ -520,19 +502,12 @@ CERT_FindCertByNicknameOrEmailAddr(CERTCertDBHandle *handle, char *name)
c = get_best_temp_or_perm(ct, STAN_GetNSSCertificate(cert));
CERT_DestroyCertificate(cert);
if (ct) {
CERTCertificate *cert2 = STAN_GetCERTCertificate(ct);
if (!cert2) {
return NULL;
}
CERT_DestroyCertificate(cert2);
CERT_DestroyCertificate(STAN_GetCERTCertificateOrRelease(ct));
}
} else {
c = ct;
}
if (c) {
return STAN_GetCERTCertificate(c);
}
return NULL;
return c ? STAN_GetCERTCertificateOrRelease(c) : NULL;
}
static void
@ -588,8 +563,10 @@ CERT_CreateSubjectCertList(CERTCertList *certList, CERTCertDBHandle *handle,
/* Iterate over the matching temp certs. Add them to the list */
ci = tSubjectCerts;
while (ci && *ci) {
cert = STAN_GetCERTCertificate(*ci);
cert = STAN_GetCERTCertificateOrRelease(*ci);
/* *ci may be invalid at this point, don't reference it again */
if (cert) {
/* NOTE: add_to_subject_list adopts the incoming cert. */
add_to_subject_list(certList, cert, validOnly, sorttime);
}
ci++;
@ -597,18 +574,23 @@ CERT_CreateSubjectCertList(CERTCertList *certList, CERTCertDBHandle *handle,
/* Iterate over the matching perm certs. Add them to the list */
ci = pSubjectCerts;
while (ci && *ci) {
cert = STAN_GetCERTCertificate(*ci);
cert = STAN_GetCERTCertificateOrRelease(*ci);
/* *ci may be invalid at this point, don't reference it again */
if (cert) {
/* NOTE: add_to_subject_list adopts the incoming cert. */
add_to_subject_list(certList, cert, validOnly, sorttime);
}
ci++;
}
/* all the references have been adopted or freed at this point, just
* free the arrays now */
nss_ZFreeIf(tSubjectCerts);
nss_ZFreeIf(pSubjectCerts);
return certList;
loser:
nss_ZFreeIf(tSubjectCerts);
nss_ZFreeIf(pSubjectCerts);
/* need to free the references in tSubjectCerts and pSubjectCerts! */
nssCertificateArray_Destroy(tSubjectCerts);
nssCertificateArray_Destroy(pSubjectCerts);
if (myList && certList != NULL) {
CERT_DestroyCertList(certList);
}

65
security/nss/lib/pk11wrap/pk11cert.c
View File

@ -88,6 +88,7 @@ static PRStatus convert_cert(NSSCertificate *c, void *arg)
CERTCertificate *nss3cert;
SECStatus secrv;
struct nss3_cert_cbstr *nss3cb = (struct nss3_cert_cbstr *)arg;
/* 'c' is not adopted. caller will free it */
nss3cert = STAN_GetCERTCertificate(c);
if (!nss3cert) return PR_FAILURE;
secrv = (*nss3cb->callback)(nss3cert, nss3cb->arg);
@ -300,7 +301,7 @@ static CERTCertificate
id.ulValueLen = c->id.size;
*nickptr = pk11_buildNickname(slot, &label, privateLabel, &id);
}
return STAN_GetCERTCertificate(c);
return STAN_GetCERTCertificateOrRelease(c);
}
/*
@ -575,8 +576,7 @@ transfer_token_certs_to_collection(nssList *certList, NSSToken *token,
}
nssTokenArray_Destroy(tokens);
}
/* *must* be a valid CERTCertificate, came from cache */
CERT_DestroyCertificate(STAN_GetCERTCertificate(certs[i]));
CERT_DestroyCertificate(STAN_GetCERTCertificateOrRelease(certs[i]));
}
nss_ZFreeIf(certs);
}
@ -687,7 +687,7 @@ PK11_FindCertFromNickname(char *nickname, void *wincx)
cert = nssCertificateArray_FindBestCertificate(certs, NULL,
&usage, NULL);
if (cert) {
rvCert = STAN_GetCERTCertificate(cert);
rvCert = STAN_GetCERTCertificateOrRelease(cert);
}
nssCertificateArray_Destroy(certs);
}
@ -812,8 +812,10 @@ PK11_FindCertsFromNickname(char *nickname, void *wincx) {
PRTime now = PR_Now();
certList = CERT_NewCertList();
for (i=0, c = *foundCerts; c; c = foundCerts[++i]) {
CERTCertificate *certCert = STAN_GetCERTCertificate(c);
CERTCertificate *certCert = STAN_GetCERTCertificateOrRelease(c);
/* c may be invalid after this, don't reference it */
if (certCert) {
/* CERT_AddCertToListSorted adopts certCert */
CERT_AddCertToListSorted(certList, certCert,
CERT_SortCBValidity, &now);
}
@ -822,6 +824,7 @@ PK11_FindCertsFromNickname(char *nickname, void *wincx) {
CERT_DestroyCertList(certList);
certList = NULL;
}
/* all the certs have been adopted or freed, free the raw array */
nss_ZFreeIf(foundCerts);
}
return certList;
@ -1416,6 +1419,7 @@ PK11_FindCertByIssuerAndSNOnToken(PK11SlotInfo *slot,
}
object = NULL; /* adopted by the previous call */
nssTrustDomain_AddCertsToCache(td, &cert,1);
/* on failure, cert is freed below */
rvCert = STAN_GetCERTCertificate(cert);
if (!rvCert) {
goto loser;
@ -1759,22 +1763,34 @@ PK11_FindCertByIssuerAndSN(PK11SlotInfo **slotPtr, CERTIssuerAndSN *issuerSN,
&serial);
if (cert) {
SECITEM_FreeItem(derSerial, PR_TRUE);
return STAN_GetCERTCertificate(cert);
return STAN_GetCERTCertificateOrRelease(cert);
}
retry:
cert = NSSTrustDomain_FindCertificateByIssuerAndSerialNumber(
do {
/* free the old cert on retry. Associated slot was not present */
if (rvCert) {
CERT_DestroyCertificate(rvCert);
rvCert = NULL;
}
cert = NSSTrustDomain_FindCertificateByIssuerAndSerialNumber(
STAN_GetDefaultTrustDomain(),
&issuer,
&serial);
if (cert) {
rvCert = STAN_GetCERTCertificate(cert);
/* Check to see if the cert's token is still there */
if (!PK11_IsPresent(rvCert->slot)) {
CERT_DestroyCertificate(rvCert);
goto retry;
if (!cert) {
break;
}
if (slotPtr) *slotPtr = PK11_ReferenceSlot(rvCert->slot);
}
rvCert = STAN_GetCERTCertificateOrRelease(cert);
if (rvCert == NULL) {
break;
}
/* Check to see if the cert's token is still there */
} while (!PK11_IsPresent(rvCert->slot));
if (rvCert && slotPtr) *slotPtr = PK11_ReferenceSlot(rvCert->slot);
SECITEM_FreeItem(derSerial, PR_TRUE);
return rvCert;
#endif
@ -1912,7 +1928,7 @@ PK11_TraverseCertsForSubject(CERTCertificate *cert,
PR_FALSE,PR_TRUE,NULL);
PK11SlotListElement *le;
/* loop through all the fortezza tokens */
/* loop through all the tokens */
for (le = list->head; le; le = le->next) {
PK11_TraverseCertsForSubjectInSlot(cert,le->slot,callback,arg);
}
@ -1997,6 +2013,9 @@ PK11_TraverseCertsForSubjectInSlot(CERTCertificate *cert, PK11SlotInfo *slot,
NSSCertificate **cp;
for (cp = certs; *cp; cp++) {
oldie = STAN_GetCERTCertificate(*cp);
if (!oldie) {
continue;
}
if ((*callback)(oldie, arg) != SECSuccess) {
nssrv = PR_FAILURE;
break;
@ -2094,6 +2113,9 @@ PK11_TraverseCertsForNicknameInSlot(SECItem *nickname, PK11SlotInfo *slot,
NSSCertificate **cp;
for (cp = certs; *cp; cp++) {
oldie = STAN_GetCERTCertificate(*cp);
if (!oldie) {
continue;
}
if ((*callback)(oldie, arg) != SECSuccess) {
nssrv = PR_FAILURE;
break;
@ -2183,6 +2205,9 @@ PK11_TraverseCertsInSlot(PK11SlotInfo *slot,
NSSCertificate **cp;
for (cp = certs; *cp; cp++) {
oldie = STAN_GetCERTCertificate(*cp);
if (!oldie) {
continue;
}
if ((*callback)(oldie, arg) != SECSuccess) {
nssrv = PR_FAILURE;
break;
@ -2242,10 +2267,7 @@ PK11_FindCertFromDERCertItem(PK11SlotInfo *slot, SECItem *inDerCert,
nssTokenArray_Destroy(tokens);
}
}
if (c) {
rvCert = STAN_GetCERTCertificate(c);
}
return rvCert;
return c ? STAN_GetCERTCertificateOrRelease(c) : NULL;
}
/* mcgreer 3.4 -- nobody uses this, ignoring */
@ -2575,6 +2597,7 @@ pk11ListCertCallback(NSSCertificate *c, void *arg)
return PR_SUCCESS;
}
/* caller still owns the reference to 'c' */
newCert = STAN_GetCERTCertificate(c);
if (!newCert) {
return PR_SUCCESS;

19
security/nss/lib/pki/pki3hack.c
View File

@ -35,7 +35,7 @@
* ***** END LICENSE BLOCK ***** */
#ifdef DEBUG
static const char CVS_ID[] = "@(#) $RCSfile: pki3hack.c,v $ $Revision: 1.81 $ $Date: 2004/05/17 20:08:37 $ $Name: $";
static const char CVS_ID[] = "@(#) $RCSfile: pki3hack.c,v $ $Revision: 1.82 $ $Date: 2004/07/21 18:18:05 $ $Name: $";
#endif /* DEBUG */
/*
@ -799,6 +799,23 @@ STAN_GetCERTCertificate(NSSCertificate *c)
{
return stan_GetCERTCertificate(c, PR_FALSE);
}
/*
* many callers of STAN_GetCERTCertificate() intend that
* the CERTCertificate returned inherits the reference to the
* NSSCertificate. For these callers it's convenient to have
* this function 'own' the reference and either return a valid
* CERTCertificate structure which inherits the reference or
* destroy the reference to NSSCertificate and returns NULL.
*/
NSS_IMPLEMENT CERTCertificate *
STAN_GetCERTCertificateOrRelease(NSSCertificate *c)
{
CERTCertificate *nss3cert = stan_GetCERTCertificate(c, PR_FALSE);
if (!nss3cert) {
nssCertificate_Destroy(c);
}
return nss3cert;
}
static nssTrustLevel
get_stan_trust(unsigned int t, PRBool isClientAuth)

5
security/nss/lib/pki/pki3hack.h
View File

@ -38,7 +38,7 @@
#define PKINSS3HACK_H
#ifdef DEBUG
static const char PKINSS3HACK_CVS_ID[] = "@(#) $RCSfile: pki3hack.h,v $ $Revision: 1.16 $ $Date: 2004/04/25 15:03:14 $ $Name: $";
static const char PKINSS3HACK_CVS_ID[] = "@(#) $RCSfile: pki3hack.h,v $ $Revision: 1.17 $ $Date: 2004/07/21 18:18:05 $ $Name: $";
#endif /* DEBUG */
#ifndef NSSDEVT_H
@ -100,6 +100,9 @@ STAN_ForceCERTCertificateUpdate(NSSCertificate *c);
NSS_EXTERN CERTCertificate *
STAN_GetCERTCertificate(NSSCertificate *c);
NSS_EXTERN CERTCertificate *
STAN_GetCERTCertificateOrRelease(NSSCertificate *c);
NSS_EXTERN NSSCertificate *
STAN_GetNSSCertificate(CERTCertificate *c);