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Re: [PATCH] gnu: tar: Fix CVE-2016-6321.
From: |
Alex Vong |
Subject: |
Re: [PATCH] gnu: tar: Fix CVE-2016-6321. |
Date: |
Sat, 31 Dec 2016 22:57:50 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
This is an updated version of the patch. There is only a minor stylish
change, spaces in local.mk are changed to tabs.
From 0cf96ac1167906565c560a12ab730d2192779315 Mon Sep 17 00:00:00 2001
From: Alex Vong <address@hidden>
Date: Sat, 31 Dec 2016 00:05:49 +0800
Subject: [PATCH] gnu: tar: Fix CVE-2016-6321.
* gnu/packages/patches/tar-CVE-2016-6321.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/base.scm (tar)[source]: Add it.
---
gnu/local.mk | 1 +
gnu/packages/base.scm | 3 +-
gnu/packages/patches/tar-CVE-2016-6321.patch | 51 ++++++++++++++++++++++++++++
3 files changed, 54 insertions(+), 1 deletion(-)
create mode 100644 gnu/packages/patches/tar-CVE-2016-6321.patch
diff --git a/gnu/local.mk b/gnu/local.mk
index 69633131e..9137a466e 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -862,6 +862,7 @@ dist_patch_DATA =
\
%D%/packages/patches/t1lib-CVE-2010-2642.patch \
%D%/packages/patches/t1lib-CVE-2011-0764.patch \
%D%/packages/patches/t1lib-CVE-2011-1552+CVE-2011-1553+CVE-2011-1554.patch
\
+ %D%/packages/patches/tar-CVE-2016-6321.patch \
%D%/packages/patches/tar-skip-unreliable-tests.patch \
%D%/packages/patches/tcl-mkindex-deterministic.patch \
%D%/packages/patches/tclxml-3.2-install.patch \
diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index 50c306009..ce6e3782c 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -162,7 +162,8 @@ implementation offers several extensions over the standard
utility.")
(sha256
(base32
"097hx7sbzp8qirl4m930lw84kn0wmxhmq7v1qpra3mrg0b8cyba0"))
- (patches (search-patches "tar-skip-unreliable-tests.patch"))))
+ (patches (search-patches "tar-CVE-2016-6321.patch"
+ "tar-skip-unreliable-tests.patch"))))
(build-system gnu-build-system)
;; Note: test suite requires ~1GiB of disk space.
(arguments
diff --git a/gnu/packages/patches/tar-CVE-2016-6321.patch
b/gnu/packages/patches/tar-CVE-2016-6321.patch
new file mode 100644
index 000000000..9e6ee653d
--- /dev/null
+++ b/gnu/packages/patches/tar-CVE-2016-6321.patch
@@ -0,0 +1,51 @@
+Fix CVE-2016-6321:
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6321
+https://security-tracker.debian.org/tracker/CVE-2016-6321
+
+Patches copied from upstream source repository
+(with modification to NEWS removed since it hunks out to a reject file):
+
+http://git.savannah.gnu.org/cgit/tar.git/commit/?id=7340f67b9860ea0531c1450e5aa261c50f67165d
+
+From 7340f67b9860ea0531c1450e5aa261c50f67165d Mon Sep 17 00:00:00 2001
+From: Paul Eggert <address@hidden>
+Date: Sat, 29 Oct 2016 21:04:40 -0700
+Subject: [PATCH] When extracting, skip ".." members
+
+* NEWS: Document this.
+* src/extract.c (extract_archive): Skip members whose names
+contain "..".
+---
+ NEWS | 8 +++++++-
+ src/extract.c | 8 ++++++++
+ 2 files changed, 15 insertions(+), 1 deletion(-)
+
+diff --git a/src/extract.c b/src/extract.c
+index f982433..7904148 100644
+--- a/src/extract.c
++++ b/src/extract.c
+@@ -1629,12 +1629,20 @@ extract_archive (void)
+ {
+ char typeflag;
+ tar_extractor_t fun;
++ bool skip_dotdot_name;
+
+ fatal_exit_hook = extract_finish;
+
+ set_next_block_after (current_header);
+
++ skip_dotdot_name = (!absolute_names_option
++ && contains_dot_dot (current_stat_info.orig_file_name));
++ if (skip_dotdot_name)
++ ERROR ((0, 0, _("%s: Member name contains '..'"),
++ quotearg_colon (current_stat_info.orig_file_name)));
++
+ if (!current_stat_info.file_name[0]
++ || skip_dotdot_name
+ || (interactive_option
+ && !confirm ("extract", current_stat_info.file_name)))
+ {
+--
+2.11.0
+
--
2.11.0
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