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-rw-r--r--auth-options.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/auth-options.c b/auth-options.c
index b528c197a..ef57ebf43 100644
--- a/auth-options.c
+++ b/auth-options.c
@@ -1,4 +1,4 @@
1/* $OpenBSD: auth-options.c,v 1.78 2018/03/14 05:35:40 djm Exp $ */ 1/* $OpenBSD: auth-options.c,v 1.79 2018/04/06 04:15:45 djm Exp $ */
2/* 2/*
3 * Copyright (c) 2018 Damien Miller <djm@mindrot.org> 3 * Copyright (c) 2018 Damien Miller <djm@mindrot.org>
4 * 4 *
@@ -394,7 +394,7 @@ sshauthopt_parse(const char *opts, const char **errstrp)
394 goto fail; 394 goto fail;
395 } 395 }
396 for (cp = opt; cp < tmp; cp++) { 396 for (cp = opt; cp < tmp; cp++) {
397 if (!isalnum((u_char)*cp)) { 397 if (!isalnum((u_char)*cp) && *cp != '_') {
398 free(opt); 398 free(opt);
399 errstr = "invalid environment string"; 399 errstr = "invalid environment string";
400 goto fail; 400 goto fail;