Fix CVE-2016-1531

[exim.git] / src / src / tls-openssl.c

diff --git a/src/src/tls-openssl.c b/src/src/tls-openssl.c
index 18994eaa93d053894eddc5c9bd0668deeed910b2..02158be2b2702efd34f5c90ac565953759158243 100644 (file)
--- a/src/src/tls-openssl.c
+++ b/src/src/tls-openssl.c
@@ -623,7 +623,7 @@ bad:
     {
     extern char ** environ;
     uschar ** p;
-    for (p = USS environ; *p != NULL; p++)
+    if (environ) for (p = USS environ; *p != NULL; p++)
       if (Ustrncmp(*p, "EXIM_TESTHARNESS_DISABLE_OCSPVALIDITYCHECK", 42) == 0)
        {
        DEBUG(D_tls) debug_printf("Supplying known bad OCSP response\n");