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upstream: don't incorrectly truncate logged strings retrieved from 

PKCS#11 modules; based on GHPR406 by Jakub Jelen; ok markus

OpenBSD-Commit-ID: 7ed1082f23a13b38c373008f856fd301d50012f9
This commit is contained in:
djm@openbsd.org 2023-07-27 22:26:49 +00:00 committed by Damien Miller
parent d1ffde6b55
commit 6958f00acf
No known key found for this signature in database
1 changed files with 19 additions and 20 deletions
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39
ssh-pkcs11.c
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@ -1,4 +1,4 @@
/* $OpenBSD: ssh-pkcs11.c,v 1.58 2023/07/19 14:02:27 djm Exp $ */
/* $OpenBSD: ssh-pkcs11.c,v 1.59 2023/07/27 22:26:49 djm Exp $ */
/*
* Copyright (c) 2010 Markus Friedl. All rights reserved.
* Copyright (c) 2014 Pedro Martelletto. All rights reserved.
@ -623,19 +623,22 @@ pkcs11_ecdsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
#endif /* OPENSSL_HAS_ECC && HAVE_EC_KEY_METHOD_NEW */
/* remove trailing spaces */
static void
static char *
rmspace(u_char *buf, size_t len)
{
size_t i;
if (!len)
return;
for (i = len - 1; i > 0; i--)
if (i == len - 1 || buf[i] == ' ')
if (len == 0)
return buf;
for (i = len - 1; i > 0; i--)
if (buf[i] == ' ')
buf[i] = '\0';
else
break;
return buf;
}
/* Used to printf fixed-width, space-padded, unterminated strings using %.*s */
#define RMSPACE(s) (int)sizeof(s), rmspace(s, sizeof(s))
/*
* open a pkcs11 session and login if required.
@ -1564,15 +1567,13 @@ pkcs11_register_provider(char *provider_id, char *pin,
provider_id, rv);
goto fail;
}
rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID));
rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription));
debug("provider %s: manufacturerID <%s> cryptokiVersion %d.%d"
" libraryDescription <%s> libraryVersion %d.%d",
debug("provider %s: manufacturerID <%.*s> cryptokiVersion %d.%d"
" libraryDescription <%.*s> libraryVersion %d.%d",
provider_id,
p->info.manufacturerID,
RMSPACE(p->info.manufacturerID),
p->info.cryptokiVersion.major,
p->info.cryptokiVersion.minor,
p->info.libraryDescription,
RMSPACE(p->info.libraryDescription),
p->info.libraryVersion.major,
p->info.libraryVersion.minor);
if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) {
@ -1607,15 +1608,13 @@ pkcs11_register_provider(char *provider_id, char *pin,
"provider %s slot %lu", provider_id, (u_long)i);
continue;
}
rmspace(token->label, sizeof(token->label));
rmspace(token->manufacturerID, sizeof(token->manufacturerID));
rmspace(token->model, sizeof(token->model));
rmspace(token->serialNumber, sizeof(token->serialNumber));
debug("provider %s slot %lu: label <%s> manufacturerID <%s> "
"model <%s> serial <%s> flags 0x%lx",
debug("provider %s slot %lu: label <%.*s> "
"manufacturerID <%.*s> model <%.*s> serial <%.*s> "
"flags 0x%lx",
provider_id, (unsigned long)i,
token->label, token->manufacturerID, token->model,
token->serialNumber, token->flags);
RMSPACE(token->label), RMSPACE(token->manufacturerID),
RMSPACE(token->model), RMSPACE(token->serialNumber),
token->flags);
/*
* open session, login with pin and retrieve public
* keys (if keyp is provided)