libarchive: add upstream security patches
Add patches for the following security issues: CVE-2017-14501 - An out-of-bounds read flaw exists in parse_file_info in archive_read_support_format_iso9660.c when extracting a specially crafted iso9660 iso file. CVE-2017-14502 - Off-by-one error for UTF-16 names in RAR archives, leading to an out-of-bounds read in archive_read_format_rar_read_header. CVE-2017-14503 - Out-of-bounds read within lha_read_data_none() in archive_read_support_format_lha.c when extracting a specially crafted lha archive. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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From f9569c086ff29259c73790db9cbf39fe8fb9d862 Mon Sep 17 00:00:00 2001
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From: John Starks <jostarks@microsoft.com>
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Date: Wed, 25 Jul 2018 12:16:34 -0700
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Subject: [PATCH] iso9660: validate directory record length
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Signed-off-by: Baruch Siach <baruch@tkos.co.il>
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---
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Upstream status: commit f9569c086ff
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.../archive_read_support_format_iso9660.c | 17 +++++++++++------
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1 file changed, 11 insertions(+), 6 deletions(-)
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diff --git a/libarchive/archive_read_support_format_iso9660.c b/libarchive/archive_read_support_format_iso9660.c
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index f01d37bf682e..089bb7236cd1 100644
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--- a/libarchive/archive_read_support_format_iso9660.c
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+++ b/libarchive/archive_read_support_format_iso9660.c
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@@ -409,7 +409,8 @@ static int next_entry_seek(struct archive_read *, struct iso9660 *,
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struct file_info **);
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static struct file_info *
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parse_file_info(struct archive_read *a,
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- struct file_info *parent, const unsigned char *isodirrec);
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+ struct file_info *parent, const unsigned char *isodirrec,
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+ size_t reclen);
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static int parse_rockridge(struct archive_read *a,
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struct file_info *file, const unsigned char *start,
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const unsigned char *end);
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@@ -1022,7 +1023,7 @@ read_children(struct archive_read *a, struct file_info *parent)
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if (*(p + DR_name_len_offset) == 1
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&& *(p + DR_name_offset) == '\001')
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continue;
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- child = parse_file_info(a, parent, p);
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+ child = parse_file_info(a, parent, p, b - p);
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if (child == NULL) {
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__archive_read_consume(a, skip_size);
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return (ARCHIVE_FATAL);
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@@ -1112,7 +1113,7 @@ choose_volume(struct archive_read *a, struct iso9660 *iso9660)
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*/
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seenJoliet = iso9660->seenJoliet;/* Save flag. */
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iso9660->seenJoliet = 0;
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- file = parse_file_info(a, NULL, block);
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+ file = parse_file_info(a, NULL, block, vd->size);
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if (file == NULL)
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return (ARCHIVE_FATAL);
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iso9660->seenJoliet = seenJoliet;
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@@ -1144,7 +1145,7 @@ choose_volume(struct archive_read *a, struct iso9660 *iso9660)
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return (ARCHIVE_FATAL);
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}
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iso9660->seenJoliet = 0;
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- file = parse_file_info(a, NULL, block);
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+ file = parse_file_info(a, NULL, block, vd->size);
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if (file == NULL)
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return (ARCHIVE_FATAL);
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iso9660->seenJoliet = seenJoliet;
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@@ -1749,7 +1750,7 @@ archive_read_format_iso9660_cleanup(struct archive_read *a)
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*/
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static struct file_info *
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parse_file_info(struct archive_read *a, struct file_info *parent,
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- const unsigned char *isodirrec)
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+ const unsigned char *isodirrec, size_t reclen)
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{
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struct iso9660 *iso9660;
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struct file_info *file, *filep;
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@@ -1763,7 +1764,11 @@ parse_file_info(struct archive_read *a, struct file_info *parent,
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iso9660 = (struct iso9660 *)(a->format->data);
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- dr_len = (size_t)isodirrec[DR_length_offset];
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+ if (reclen == 0 || reclen < (dr_len = (size_t)isodirrec[DR_length_offset])) {
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+ archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
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+ "Invalid directory record length");
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+ return (NULL);
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+ }
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name_len = (size_t)isodirrec[DR_name_len_offset];
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location = archive_le32dec(isodirrec + DR_extent_offset);
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fsize = toi(isodirrec + DR_size_offset, DR_size_size);
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--
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2.18.0
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From 5562545b5562f6d12a4ef991fae158bf4ccf92b6 Mon Sep 17 00:00:00 2001
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From: Joerg Sonnenberger <joerg@bec.de>
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Date: Sat, 9 Sep 2017 17:47:32 +0200
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Subject: [PATCH] Avoid a read off-by-one error for UTF16 names in RAR
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archives.
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Reported-By: OSS-Fuzz issue 573
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Signed-off-by: Baruch Siach <baruch@tkos.co.il>
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---
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Upstream status: commit 5562545b5562
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libarchive/archive_read_support_format_rar.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/libarchive/archive_read_support_format_rar.c b/libarchive/archive_read_support_format_rar.c
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index cbb14c32dc3b..751de6979ba5 100644
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--- a/libarchive/archive_read_support_format_rar.c
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+++ b/libarchive/archive_read_support_format_rar.c
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@@ -1496,7 +1496,11 @@ read_header(struct archive_read *a, struct archive_entry *entry,
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return (ARCHIVE_FATAL);
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}
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filename[filename_size++] = '\0';
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- filename[filename_size++] = '\0';
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+ /*
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+ * Do not increment filename_size here as the computations below
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+ * add the space for the terminating NUL explicitly.
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+ */
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+ filename[filename_size] = '\0';
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/* Decoded unicode form is UTF-16BE, so we have to update a string
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* conversion object for it. */
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--
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2.18.0
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@ -0,0 +1,32 @@
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From 2c8c83b9731ff822fad6cc8c670ea5519c366a14 Mon Sep 17 00:00:00 2001
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From: Joerg Sonnenberger <joerg@bec.de>
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Date: Thu, 19 Jul 2018 21:14:53 +0200
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Subject: [PATCH] Reject LHA archive entries with negative size.
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Signed-off-by: Baruch Siach <baruch@tkos.co.il>
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---
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Upstream status: commit 2c8c83b9731
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libarchive/archive_read_support_format_lha.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/libarchive/archive_read_support_format_lha.c b/libarchive/archive_read_support_format_lha.c
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index b8ef4ae10ece..95c99bb1f31e 100644
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--- a/libarchive/archive_read_support_format_lha.c
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+++ b/libarchive/archive_read_support_format_lha.c
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@@ -701,6 +701,12 @@ archive_read_format_lha_read_header(struct archive_read *a,
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* Prepare variables used to read a file content.
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*/
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lha->entry_bytes_remaining = lha->compsize;
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+ if (lha->entry_bytes_remaining < 0) {
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+ archive_set_error(&a->archive,
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+ ARCHIVE_ERRNO_FILE_FORMAT,
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+ "Invalid LHa entry size");
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+ return (ARCHIVE_FATAL);
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+ }
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lha->entry_offset = 0;
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lha->entry_crc_calculated = 0;
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--
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2.18.0
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