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[crypto,certificate_data] add some hostname sanitation

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akallabeth
2025-12-13 17:28:43 +01:00
parent f5cad611e1
commit 83d96a81f3
1 changed files with 11 additions and 3 deletions
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14
libfreerdp/crypto/certificate_data.c
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@@ -33,6 +33,8 @@
#include <freerdp/crypto/certificate_data.h>
#include "certificate.h"
#include <freerdp/log.h>
#define TAG FREERDP_TAG("crypto.certificate_data")
struct rdp_certificate_data
{
@@ -95,8 +97,9 @@ static BOOL freerdp_certificate_data_load_cache(rdpCertificateData* data)
WINPR_ASSERT(data);
freerdp_certificate_data_hash_(data->hostname, data->port, data->cached_hash,
sizeof(data->cached_hash));
if (strnlen(data->cached_hash, sizeof(data->cached_hash)) == 0)
sizeof(data->cached_hash) - 1);
const size_t len = strnlen(data->cached_hash, sizeof(data->cached_hash));
if ((len == 0) || (len >= sizeof(data->cached_hash)))
goto fail;
data->cached_subject = freerdp_certificate_get_subject(data->cert);
@@ -133,6 +136,11 @@ static rdpCertificateData* freerdp_certificate_data_new_nocopy(const char* hostn
if (!hostname || !xcert)
goto fail;
if (strnlen(hostname, MAX_PATH) >= MAX_PATH)
{
WLog_ERR(TAG, "hostname exceeds length limits");
goto fail;
}
certdata = (rdpCertificateData*)calloc(1, sizeof(rdpCertificateData));
@@ -295,5 +303,5 @@ char* freerdp_certificate_data_hash(const char* hostname, UINT16 port)
{
char name[MAX_PATH + 10] = { 0 };
freerdp_certificate_data_hash_(hostname, port, name, sizeof(name));
return _strdup(name);
return strndup(name, sizeof(name));
}