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gnu: p7zip: Fix CVE-2017-17969.

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* gnu/packages/patches/p7zip-CVE-2017-17969.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/compression.scm (p7zip)[source]: Use it.
This commit is contained in:
Leo Famulari 2018-02-05 16:21:12 -05:00
parent b1968d86b9
commit a630c64709
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3 changed files with 38 additions and 1 deletions
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3
gnu/local.mk
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@ -955,7 +955,8 @@ dist_patch_DATA = \
%D%/packages/patches/osip-CVE-2017-7853.patch \ %D%/packages/patches/osip-CVE-2017-7853.patch \
%D%/packages/patches/ots-no-include-missing-file.patch \ %D%/packages/patches/ots-no-include-missing-file.patch \
%D%/packages/patches/owncloud-disable-updatecheck.patch \ %D%/packages/patches/owncloud-disable-updatecheck.patch \
%D%/packages/patches/p7zip-CVE-2016-9296.patch \ %D%/packages/patches/p7zip-CVE-2016-9296.patch \
%D%/packages/patches/p7zip-CVE-2017-17969.patch \
%D%/packages/patches/p7zip-remove-unused-code.patch \ %D%/packages/patches/p7zip-remove-unused-code.patch \
%D%/packages/patches/patchelf-page-size.patch \ %D%/packages/patches/patchelf-page-size.patch \
%D%/packages/patches/patchelf-rework-for-arm.patch \ %D%/packages/patches/patchelf-rework-for-arm.patch \

1
gnu/packages/compression.scm
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@ -1377,6 +1377,7 @@ (define-public p7zip
(delete-file-recursively "CPP/7zip/Compress/Rar") (delete-file-recursively "CPP/7zip/Compress/Rar")
#t)) #t))
(patches (search-patches "p7zip-CVE-2016-9296.patch" (patches (search-patches "p7zip-CVE-2016-9296.patch"
"p7zip-CVE-2017-17969.patch"
"p7zip-remove-unused-code.patch")))) "p7zip-remove-unused-code.patch"))))
(build-system gnu-build-system) (build-system gnu-build-system)
(arguments (arguments

35
gnu/packages/patches/p7zip-CVE-2017-17969.patch Normal file
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@ -0,0 +1,35 @@
Fix CVE-2017-17969:
https://sourceforge.net/p/p7zip/bugs/204/
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17969
Patch copied from Debian.
Subject: Heap-based buffer overflow in 7zip/Compress/ShrinkDecoder.cpp
Origin: vendor, https://sourceforge.net/p/p7zip/bugs/_discuss/thread/0920f369/27d7/attachment/CVE-2017-17969.patch
Forwarded: https://sourceforge.net/p/p7zip/bugs/_discuss/thread/0920f369/#27d7
Bug: https://sourceforge.net/p/p7zip/bugs/204/
Bug-Debian: https://bugs.debian.org/888297
Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-17969
Author: Antoine Beaupré <anarcat@debian.org>
Reviewed-by: Salvatore Bonaccorso <carnil@debian.org>
Last-Update: 2018-02-01
Applied-Upstream: 18.00-beta
--- a/CPP/7zip/Compress/ShrinkDecoder.cpp
+++ b/CPP/7zip/Compress/ShrinkDecoder.cpp
@@ -121,8 +121,13 @@ HRESULT CDecoder::CodeReal(ISequentialIn
{
_stack[i++] = _suffixes[cur];
cur = _parents[cur];
+ if (cur >= kNumItems || i >= kNumItems)
+ break;
}
-
+
+ if (cur >= kNumItems || i >= kNumItems)
+ break;
+
_stack[i++] = (Byte)cur;
lastChar2 = (Byte)cur;