Subject: [PATCH] gnu: libarchive: Replace with libarchive 3.3.3 and fix CVE-2018-{1000877, 1000878, 1000880}.
From: Alex Vong <[email-masked]>
To: [email-masked]
Cc: [email-masked], [email-masked]
Date: Sat, 05 Jan 2019 23:56:23 +0800
List-Id: <debbugs-submit.debbugs.gnu.org>

Tags: security

Hello guix,

The following patch fixes all CVEs in libarchive. Since updating
libarchive would cause > 3000 rebuilds, we graft instead.

From c8f1c64de45c7a1fefed69d902164f3577aac817 Mon Sep 17 00:00:00 2001
From: Alex Vong <[email-masked]>
Date: Sat, 5 Jan 2019 23:20:41 +0800
Subject: [PATCH] gnu: libarchive: Replace with libarchive 3.3.3 and fix
 CVE-2018-{1000877,1000878,1000880}.

* gnu/packages/backup.scm (libarchive)[source, home-page]: Use HTTPS.
[replacement]: New field.
(libarchive-3.3.3): New variable.
* gnu/packages/patches/libarchive-CVE-2018-1000877.patch,
gnu/packages/patches/libarchive-CVE-2018-1000878.patch,
gnu/packages/patches/libarchive-CVE-2018-1000880.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.
---
 gnu/local.mk                                  |  5 +-
 gnu/packages/backup.scm                       | 22 ++++-
 .../patches/libarchive-CVE-2018-1000877.patch | 45 ++++++++++
 .../patches/libarchive-CVE-2018-1000878.patch | 86 +++++++++++++++++++
 .../patches/libarchive-CVE-2018-1000880.patch | 51 +++++++++++
 5 files changed, 206 insertions(+), 3 deletions(-)
 create mode 100644 gnu/packages/patches/libarchive-CVE-2018-1000877.patch
 create mode 100644 gnu/packages/patches/libarchive-CVE-2018-1000878.patch
 create mode 100644 gnu/packages/patches/libarchive-CVE-2018-1000880.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 6d4159e16..851a9ef0e 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -9,7 +9,7 @@
 # Copyright © 2016 Adonay "adfeno" Felipe Nogueira <https://libreplanet.org/wiki/User:Adfeno> <[email-masked]>
 # Copyright © 2016, 2017, 2018 Ricardo Wurmus <[email-masked]>
 # Copyright © 2016 Ben Woodcroft <[email-masked]>
-# Copyright © 2016, 2017, 2018 Alex Vong <[email-masked]>
+# Copyright © 2016, 2017, 2018, 2019 Alex Vong <[email-masked]>
 # Copyright © 2016, 2017 Efraim Flashner <[email-masked]>
 # Copyright © 2016, 2017 Jan Nieuwenhuizen <[email-masked]>
 # Copyright © 2017 Tobias Geerinckx-Rice <[email-masked]>
@@ -877,6 +877,9 @@ dist_patch_DATA =						\
   %D%/packages/patches/liba52-use-mtune-not-mcpu.patch		\
   %D%/packages/patches/libarchive-CVE-2017-14166.patch		\
   %D%/packages/patches/libarchive-CVE-2017-14502.patch		\
+  %D%/packages/patches/libarchive-CVE-2018-1000877.patch	\
+  %D%/packages/patches/libarchive-CVE-2018-1000878.patch	\
+  %D%/packages/patches/libarchive-CVE-2018-1000880.patch	\
   %D%/packages/patches/libbase-fix-includes.patch		\
   %D%/packages/patches/libbase-use-own-logging.patch		\
   %D%/packages/patches/libbonobo-activation-test-race.patch	\
diff --git a/gnu/packages/backup.scm b/gnu/packages/backup.scm
index a9d828670..4a8355f2b 100644
--- a/gnu/packages/backup.scm
+++ b/gnu/packages/backup.scm
@@ -12,6 +12,7 @@
 ;;; Copyright © 2018 Mark H Weaver <[email-masked]>
 ;;; Copyright © 2018 Oleg Pykhalov <[email-masked]>
 ;;; Copyright © 2018 Ricardo Wurmus <[email-masked]>
+;;; Copyright © 2019 Alex Vong <[email-masked]>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -194,11 +195,12 @@ backups (called chunks) to allow easy burning to CD/DVD.")
 (define-public libarchive
   (package
     (name "libarchive")
+    (replacement libarchive-3.3.3)
     (version "3.3.2")
     (source
      (origin
        (method url-fetch)
-       (uri (string-append "http://libarchive.org/downloads/libarchive-"
+       (uri (string-append "https://libarchive.org/downloads/libarchive-"
                            version ".tar.gz"))
        (patches (search-patches "libarchive-CVE-2017-14166.patch"
                                 "libarchive-CVE-2017-14502.patch"))
@@ -258,7 +260,7 @@ backups (called chunks) to allow easy burning to CD/DVD.")
        ;; libarchive/test/test_write_format_gnutar_filenames.c needs to be
        ;; compiled with C99 or C11 or a gnu variant.
        #:configure-flags '("CFLAGS=-O2 -g -std=c99")))
-    (home-page "http://libarchive.org/")
+    (home-page "https://libarchive.org/")
     (synopsis "Multi-format archive and compression library")
     (description
      "Libarchive provides a flexible interface for reading and writing
@@ -270,6 +272,22 @@ archive.  In particular, note that there is currently no built-in support for
 random access nor for in-place modification.")
     (license license:bsd-2)))
 
+(define-public libarchive-3.3.3
+  (package
+    (inherit libarchive)
+    (version "3.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://libarchive.org/downloads/libarchive-"
+                           version ".tar.gz"))
+       (patches (search-patches "libarchive-CVE-2018-1000877.patch"
+                                "libarchive-CVE-2018-1000878.patch"
+                                "libarchive-CVE-2018-1000880.patch"))
+       (sha256
+        (base32
+         "0bhfncid058p7n1n8v29l6wxm3mhdqfassscihbsxfwz3iwb2zms"))))))
+
 (define-public rdup
   (package
     (name "rdup")
diff --git a/gnu/packages/patches/libarchive-CVE-2018-1000877.patch b/gnu/packages/patches/libarchive-CVE-2018-1000877.patch
new file mode 100644
index 000000000..5b68884a0
--- /dev/null
+++ b/gnu/packages/patches/libarchive-CVE-2018-1000877.patch
@@ -0,0 +1,45 @@
+Fix CVE-2018-1000877:
+
+https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909
+https://github.com/libarchive/libarchive/pull/1105
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000877
+https://security-tracker.debian.org/tracker/CVE-2018-1000877
+
+Patch copied from upstream source repository:
+
+https://github.com/libarchive/libarchive/commit/021efa522ad729ff0f5806c4ce53e4a6cc1daa31
+
+From 021efa522ad729ff0f5806c4ce53e4a6cc1daa31 Mon Sep 17 00:00:00 2001
+From: Daniel Axtens <[email-masked]>
+Date: Tue, 20 Nov 2018 17:56:29 +1100
+Subject: [PATCH] Avoid a double-free when a window size of 0 is specified
+
+new_size can be 0 with a malicious or corrupted RAR archive.
+
+realloc(area, 0) is equivalent to free(area), so the region would
+be free()d here and the free()d again in the cleanup function.
+
+Found with a setup running AFL, afl-rb, and qsym.
+---
+ libarchive/archive_read_support_format_rar.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/libarchive/archive_read_support_format_rar.c b/libarchive/archive_read_support_format_rar.c
+index 23452222..6f419c27 100644
+--- a/libarchive/archive_read_support_format_rar.c
++++ b/libarchive/archive_read_support_format_rar.c
+@@ -2300,6 +2300,11 @@ parse_codes(struct archive_read *a)
+       new_size = DICTIONARY_MAX_SIZE;
+     else
+       new_size = rar_fls((unsigned int)rar->unp_size) << 1;
++    if (new_size == 0) {
++      archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
++                        "Zero window size is invalid.");
++      return (ARCHIVE_FATAL);
++    }
+     new_window = realloc(rar->lzss.window, new_size);
+     if (new_window == NULL) {
+       archive_set_error(&a->archive, ENOMEM,
+-- 
+2.20.1
+
diff --git a/gnu/packages/patches/libarchive-CVE-2018-1000878.patch b/gnu/packages/patches/libarchive-CVE-2018-1000878.patch
new file mode 100644
index 000000000..fef088132
--- /dev/null
+++ b/gnu/packages/patches/libarchive-CVE-2018-1000878.patch
@@ -0,0 +1,86 @@
+Fix CVE-2018-1000878:
+
+https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909
+https://github.com/libarchive/libarchive/pull/1105
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000878
+https://security-tracker.debian.org/tracker/CVE-2018-1000878
+
+Patch copied from upstream source repository:
+
+https://github.com/libarchive/libarchive/commit/bfcfe6f04ed20db2504db8a254d1f40a1d84eb28
+
+From bfcfe6f04ed20db2504db8a254d1f40a1d84eb28 Mon Sep 17 00:00:00 2001
+From: Daniel Axtens <[email-masked]>
+Date: Tue, 4 Dec 2018 00:55:22 +1100
+Subject: [PATCH] rar: file split across multi-part archives must match
+
+Fuzzing uncovered some UAF and memory overrun bugs where a file in a
+single file archive reported that it was split across multiple
+volumes. This was caused by ppmd7 operations calling
+rar_br_fillup. This would invoke rar_read_ahead, which would in some
+situations invoke archive_read_format_rar_read_header.  That would
+check the new file name against the old file name, and if they didn't
+match up it would free the ppmd7 buffer and allocate a new
+one. However, because the ppmd7 decoder wasn't actually done with the
+buffer, it would continue to used the freed buffer. Both reads and
+writes to the freed region can be observed.
+
+This is quite tricky to solve: once the buffer has been freed it is
+too late, as the ppmd7 decoder functions almost universally assume
+success - there's no way for ppmd_read to signal error, nor are there
+good ways for functions like Range_Normalise to propagate them. So we
+can't detect after the fact that we're in an invalid state - e.g. by
+checking rar->cursor, we have to prevent ourselves from ever ending up
+there. So, when we are in the dangerous part or rar_read_ahead that
+assumes a valid split, we set a flag force read_header to either go
+down the path for split files or bail. This means that the ppmd7
+decoder keeps a valid buffer and just runs out of data.
+
+Found with a combination of AFL, afl-rb and qsym.
+---
+ libarchive/archive_read_support_format_rar.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/libarchive/archive_read_support_format_rar.c b/libarchive/archive_read_support_format_rar.c
+index 6f419c27..a8cc5c94 100644
+--- a/libarchive/archive_read_support_format_rar.c
++++ b/libarchive/archive_read_support_format_rar.c
+@@ -258,6 +258,7 @@ struct rar
+   struct data_block_offsets *dbo;
+   unsigned int cursor;
+   unsigned int nodes;
++  char filename_must_match;
+ 
+   /* LZSS members */
+   struct huffman_code maincode;
+@@ -1560,6 +1561,12 @@ read_header(struct archive_read *a, struct archive_entry *entry,
+     }
+     return ret;
+   }
++  else if (rar->filename_must_match)
++  {
++    archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
++      "Mismatch of file parts split across multi-volume archive");
++    return (ARCHIVE_FATAL);
++  }
+ 
+   rar->filename_save = (char*)realloc(rar->filename_save,
+                                       filename_size + 1);
+@@ -2933,12 +2940,14 @@ rar_read_ahead(struct archive_read *a, size_t min, ssize_t *avail)
+     else if (*avail == 0 && rar->main_flags & MHD_VOLUME &&
+       rar->file_flags & FHD_SPLIT_AFTER)
+     {
++      rar->filename_must_match = 1;
+       ret = archive_read_format_rar_read_header(a, a->entry);
+       if (ret == (ARCHIVE_EOF))
+       {
+         rar->has_endarc_header = 1;
+         ret = archive_read_format_rar_read_header(a, a->entry);
+       }
++      rar->filename_must_match = 0;
+       if (ret != (ARCHIVE_OK))
+         return NULL;
+       return rar_read_ahead(a, min, avail);
+-- 
+2.20.1
+
diff --git a/gnu/packages/patches/libarchive-CVE-2018-1000880.patch b/gnu/packages/patches/libarchive-CVE-2018-1000880.patch
new file mode 100644
index 000000000..6834cabda
--- /dev/null
+++ b/gnu/packages/patches/libarchive-CVE-2018-1000880.patch
@@ -0,0 +1,51 @@
+Fix CVE-2018-1000880:
+
+https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909
+https://github.com/libarchive/libarchive/pull/1105
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000880
+https://security-tracker.debian.org/tracker/CVE-2018-1000880
+
+Patch copied from upstream source repository:
+
+https://github.com/libarchive/libarchive/commit/9c84b7426660c09c18cc349f6d70b5f8168b5680
+
+From 9c84b7426660c09c18cc349f6d70b5f8168b5680 Mon Sep 17 00:00:00 2001
+From: Daniel Axtens <[email-masked]>
+Date: Tue, 4 Dec 2018 16:33:42 +1100
+Subject: [PATCH] warc: consume data once read
+
+The warc decoder only used read ahead, it wouldn't actually consume
+data that had previously been printed. This means that if you specify
+an invalid content length, it will just reprint the same data over
+and over and over again until it hits the desired length.
+
+This means that a WARC resource with e.g.
+Content-Length: 666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666665
+but only a few hundred bytes of data, causes a quasi-infinite loop.
+
+Consume data in subsequent calls to _warc_read.
+
+Found with an AFL + afl-rb + qsym setup.
+---
+ libarchive/archive_read_support_format_warc.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/libarchive/archive_read_support_format_warc.c b/libarchive/archive_read_support_format_warc.c
+index e8753853..e8fc8428 100644
+--- a/libarchive/archive_read_support_format_warc.c
++++ b/libarchive/archive_read_support_format_warc.c
+@@ -386,6 +386,11 @@ _warc_read(struct archive_read *a, const void **buf, size_t *bsz, int64_t *off)
+ 		return (ARCHIVE_EOF);
+ 	}
+ 
++	if (w->unconsumed) {
++		__archive_read_consume(a, w->unconsumed);
++		w->unconsumed = 0U;
++	}
++
+ 	rab = __archive_read_ahead(a, 1U, &nrd);
+ 	if (nrd < 0) {
+ 		*bsz = 0U;
+-- 
+2.20.1
+
-- 
2.20.1

Cheers,
Alex