If the cert date is negative, use DateTime instead of date. Fixes #9100

(cherry picked from commit 3fec247042a91642a22a8761d3c8a1f9df119817)

1 files changed, 10 insertions, 0 deletions

diff --git a/src/etc/inc/certs.inc b/src/etc/inc/certs.inc
index e8646e5..5470e70 100644
--- a/src/etc/inc/certs.inc
+++ b/src/etc/inc/certs.inc
@@ -680,9 +680,19 @@ function cert_get_dates($str_crt, $decode = true) {
 	$crt_details = openssl_x509_parse($str_crt);
 	if ($crt_details['validFrom_time_t'] > 0) {
 		$start = date('r', $crt_details['validFrom_time_t']);
+	} else {
+		$dt = DateTime::createFromFormat('ymdHis', rtrim($crt_details['validFrom'], 'Z'));
+		if ($dt !== false) {
+			$start = $dt->format(DateTimeInterface::RFC2822);
+		}
 	}
 	if ($crt_details['validTo_time_t'] > 0) {
 		$end = date('r', $crt_details['validTo_time_t']);
+	} else {
+		$dt = DateTime::createFromFormat('ymdHis', rtrim($crt_details['validTo'], 'Z'));
+		if ($dt !== false) {
+			$end = $dt->format(DateTimeInterface::RFC2822);
+		}
 	}
 	return array($start, $end);
 }