From ea251020304b9c18f31c39de867a47311b1bb46c Mon Sep 17 00:00:00 2001 From: Ross Burton Date: Tue, 5 Mar 2019 16:30:02 +0000 Subject: libarchive: integrate security fixes Fix the following CVEs by backporting patches from upstream: - CVE-2019-1000019 - CVE-2019-1000020 - CVE-2018-1000877 - CVE-2018-1000878 - CVE-2018-1000879 - CVE-2018-1000880 Signed-off-by: Ross Burton Signed-off-by: Richard Purdie --- .../libarchive/libarchive/CVE-2018-1000877.patch | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 meta/recipes-extended/libarchive/libarchive/CVE-2018-1000877.patch (limited to 'meta/recipes-extended/libarchive/libarchive/CVE-2018-1000877.patch') diff --git a/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000877.patch b/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000877.patch new file mode 100644 index 0000000000..ce638370bd --- /dev/null +++ b/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000877.patch @@ -0,0 +1,38 @@ +CVE: CVE-2018-1000877 +Upstream-Status: Backport +Signed-off-by: Ross Burton + +From 021efa522ad729ff0f5806c4ce53e4a6cc1daa31 Mon Sep 17 00:00:00 2001 +From: Daniel Axtens +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, +-- +2.20.0 + -- cgit 1.2.3-korg