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p7zip: vendor debian patches

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A few months ago I moved these patches to the new debian alsa instance [1], but
it looks like their `sha256`s on the tag at the remote have changed again.

It doesn't appear that debian's source remote is stable in the way we need it to
be; let's just vendor the patches to avoid future issues.

[1] https://github.com/NixOS/nixpkgs/pull/41769
This commit is contained in:
Benjamin Hipple 2018-08-16 01:52:30 +00:00
parent d5e496a2bb
commit 0c119682ce
3 changed files with 61 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
pkgs/tools/archivers/p7zip/12-CVE-2016-9296.patch Normal file
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@ -0,0 +1,23 @@
From: Robert Luberda <robert@debian.org>
Date: Sat, 19 Nov 2016 08:48:08 +0100
Subject: Fix nullptr dereference (CVE-2016-9296)
Patch taken from https://sourceforge.net/p/p7zip/bugs/185/
---
CPP/7zip/Archive/7z/7zIn.cpp | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/CPP/7zip/Archive/7z/7zIn.cpp b/CPP/7zip/Archive/7z/7zIn.cpp
index b0c6b98..7c6dde2 100644
--- a/CPP/7zip/Archive/7z/7zIn.cpp
+++ b/CPP/7zip/Archive/7z/7zIn.cpp
@@ -1097,7 +1097,8 @@ HRESULT CInArchive::ReadAndDecodePackedStreams(
if (CrcCalc(data, unpackSize) != folders.FolderCRCs.Vals[i])
ThrowIncorrect();
}
- HeadersSize += folders.PackPositions[folders.NumPackStreams];
+ if (folders.PackPositions)
+ HeadersSize += folders.PackPositions[folders.NumPackStreams];
return S_OK;
}

35
pkgs/tools/archivers/p7zip/13-CVE-2017-17969.patch Normal file
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@ -0,0 +1,35 @@
From: =?utf-8?q?Antoine_Beaupr=C3=A9?= <anarcat@debian.org>
Date: Fri, 2 Feb 2018 11:11:41 +0100
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
Reviewed-by: Salvatore Bonaccorso <carnil@debian.org>
Last-Update: 2018-02-01
Applied-Upstream: 18.00-beta
---
CPP/7zip/Compress/ShrinkDecoder.cpp | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/CPP/7zip/Compress/ShrinkDecoder.cpp b/CPP/7zip/Compress/ShrinkDecoder.cpp
index 80b7e67..ca37764 100644
--- a/CPP/7zip/Compress/ShrinkDecoder.cpp
+++ b/CPP/7zip/Compress/ShrinkDecoder.cpp
@@ -121,8 +121,13 @@ HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream *
{
_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;

14
pkgs/tools/archivers/p7zip/default.nix
View file

@ -1,4 +1,4 @@
{ stdenv, fetchurl, fetchpatch }:
{ stdenv, fetchurl }:
stdenv.mkDerivation rec {
name = "p7zip-${version}";
@ -10,16 +10,8 @@ stdenv.mkDerivation rec {
};
patches = [
(fetchpatch rec {
name = "CVE-2016-9296.patch";
url = "https://salsa.debian.org/debian/p7zip/raw/debian/${version}+dfsg-6/debian/patches/12-${name}";
sha256 = "09wbkzai46bwm8zmplsz0m4jck3qn7snr68i9p1gsih300zidj0m";
})
(fetchpatch rec {
name = "CVE-2017-17969.patch";
url = "https://salsa.debian.org/debian/p7zip/raw/debian/${version}+dfsg-6/debian/patches/13-${name}";
sha256 = "00pycdwx6gw7w591bg54ym6zhbxgn47p3zhms6mnmaycfzw09mkn";
})
./12-CVE-2016-9296.patch
./13-CVE-2017-17969.patch
];
# Default makefile is full of impurities on Darwin. The patch doesn't hurt Linux so I'm leaving it unconditional