string.c: do not interpret '\\' before '\0' (CVE-2019-15846)

[exim.git] / src / src / exim_dbmbuild.c

diff --git a/src/src/exim_dbmbuild.c b/src/src/exim_dbmbuild.c
index 6f5b0e9036ae65ee36253fdaebdd1e33f3c6cabf..6a14ab9a0d67c66d481a6da1e527f479af1a7778 100644 (file)
--- a/src/src/exim_dbmbuild.c
+++ b/src/src/exim_dbmbuild.c
@@ -117,6 +117,7 @@ string_interpret_escape(const uschar **pp)
 int ch;
 const uschar *p = *pp;
 ch = *(++p);
+if (ch == '\0') return **pp;
 if (isdigit(ch) && ch != '8' && ch != '9')
   {
   ch -= '0';