Fixed GHSL-2020-101 missing NULL check

(cherry picked from commit b207dbba35c505bbc3ad5aadc10b34980c6b7e8e)

diff --git a/libfreerdp/core/security.c b/libfreerdp/core/security.c
index bce1855..e6571c3 100644 (file)
--- a/libfreerdp/core/security.c
+++ b/libfreerdp/core/security.c
@@ -816,6 +816,9 @@ BOOL security_fips_decrypt(BYTE* data, size_t length, rdpRdp* rdp)
 {
        size_t olen;
 
+       if (!rdp || !rdp->fips_decrypt)
+               return FALSE;
+
        if (!winpr_Cipher_Update(rdp->fips_decrypt, data, length, data, &olen))
                return FALSE;