tar/Reject-pax-options-starting-with-equals-sign.patch

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2019-09-30 11:18:06 -04:00
From 99d415e1902c2309a4a3da41b2f08e5719771336 Mon Sep 17 00:00:00 2001
From: Sergey Poznyakoff <gray@gnu.org>
Date: Fri, 21 Dec 2018 07:32:47 +0200
Subject: [PATCH 34/58] Reject pax options starting with equals sign
Bug reported in
http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00010.html
* xheader.c (xheader_set_keyword_equal): Bail out if the keyword starts
with =
---
src/xheader.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/xheader.c b/src/xheader.c
index 980f050..e938502 100644
--- a/src/xheader.c
+++ b/src/xheader.c
@@ -185,6 +185,9 @@ xheader_set_keyword_equal (char *kw, char *eq)
bool global = true;
char *p = eq;
+ if (eq == kw)
+ USAGE_ERROR ((0, 0, _("Malformed pax option: %s"), quote (kw)));
+
if (eq[-1] == ':')
{
p--;
--
2.19.1