52 lines
1.5 KiB
Diff
52 lines
1.5 KiB
Diff
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Fix CVE-2016-6321:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6321
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https://security-tracker.debian.org/tracker/CVE-2016-6321
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Patch adapted from upstream source repository (the changes to 'NEWS'
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don't apply to the Tar 1.29 release tarball).
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http://git.savannah.gnu.org/cgit/tar.git/commit/?id=7340f67b9860ea0531c1450e5aa261c50f67165d
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From 7340f67b9860ea0531c1450e5aa261c50f67165d Mon Sep 17 00:00:00 2001
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From: Paul Eggert <eggert@Penguin.CS.UCLA.EDU>
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Date: Sat, 29 Oct 2016 21:04:40 -0700
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Subject: [PATCH] When extracting, skip ".." members
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* NEWS: Document this.
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* src/extract.c (extract_archive): Skip members whose names
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contain "..".
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---
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NEWS | 8 +++++++-
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src/extract.c | 8 ++++++++
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2 files changed, 15 insertions(+), 1 deletion(-)
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diff --git a/src/extract.c b/src/extract.c
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index f982433..7904148 100644
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--- a/src/extract.c
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+++ b/src/extract.c
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@@ -1629,12 +1629,20 @@ extract_archive (void)
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{
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char typeflag;
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tar_extractor_t fun;
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+ bool skip_dotdot_name;
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fatal_exit_hook = extract_finish;
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set_next_block_after (current_header);
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+ skip_dotdot_name = (!absolute_names_option
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+ && contains_dot_dot (current_stat_info.orig_file_name));
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+ if (skip_dotdot_name)
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+ ERROR ((0, 0, _("%s: Member name contains '..'"),
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+ quotearg_colon (current_stat_info.orig_file_name)));
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+
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if (!current_stat_info.file_name[0]
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+ || skip_dotdot_name
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|| (interactive_option
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&& !confirm ("extract", current_stat_info.file_name)))
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{
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--
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2.11.0
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