Fix out of bounds read on empty string filename for guntar, pax and v7tar Signed-off-by: Andrej Valek <[email protected]> --- .../libarchive/libarchive/bug1066.patch | 54 ++++++++++++++++++++++ .../libarchive/libarchive_3.3.3.bb | 1 + 2 files changed, 55 insertions(+) create mode 100644 meta/recipes-extended/libarchive/libarchive/bug1066.patch
diff --git a/meta/recipes-extended/libarchive/libarchive/bug1066.patch b/meta/recipes-extended/libarchive/libarchive/bug1066.patch new file mode 100644 index 0000000000..0a662b57b4 --- /dev/null +++ b/meta/recipes-extended/libarchive/libarchive/bug1066.patch @@ -0,0 +1,54 @@ +libarchive-3.3.3: Fix bug1066 + +[No upstream tracking] -- https://github.com/libarchive/libarchive/pull/1066 + +archive_write_set_format_*.c: fix out of bounds read on empty string () filename +for guntar, pax and v7tar + +There is an out of bounds read flaw in the archive_write_gnutar_header, +archive_write_pax_header and archive_write_v7tar_header functions which +could leds to cause a denial of service. + +Upstream-Status: Backport [https://github.com/libarchive/libarchive/commit/c246ec5d058a3f70a2d3fb765f92fe9db77b25df] +Bug: 1066 +Signed-off-by: Andrej Valek <[email protected]> + +diff --git a/libarchive/archive_write_set_format_gnutar.c b/libarchive/archive_write_set_format_gnutar.c +index 2d858c9..1966c53 100644 +--- a/libarchive/archive_write_set_format_gnutar.c ++++ b/libarchive/archive_write_set_format_gnutar.c +@@ -339,7 +339,7 @@ archive_write_gnutar_header(struct archive_write *a, + * case getting WCS failed. On POSIX, this is a + * normal operation. + */ +- if (p != NULL && p[strlen(p) - 1] != '/') { ++ if (p != NULL && p[0] != '\0' && p[strlen(p) - 1] != '/') { + struct archive_string as; + + archive_string_init(&as); +diff --git a/libarchive/archive_write_set_format_pax.c b/libarchive/archive_write_set_format_pax.c +index 6a301ac..4cfa8ff 100644 +--- a/libarchive/archive_write_set_format_pax.c ++++ b/libarchive/archive_write_set_format_pax.c +@@ -660,7 +660,7 @@ archive_write_pax_header(struct archive_write *a, + * case getting WCS failed. On POSIX, this is a + * normal operation. + */ +- if (p != NULL && p[strlen(p) - 1] != '/') { ++ if (p != NULL && p[0] != '\0' && p[strlen(p) - 1] != '/') { + struct archive_string as; + + archive_string_init(&as); +diff --git a/libarchive/archive_write_set_format_v7tar.c b/libarchive/archive_write_set_format_v7tar.c +index 62b1522..53c0db0 100644 +--- a/libarchive/archive_write_set_format_v7tar.c ++++ b/libarchive/archive_write_set_format_v7tar.c +@@ -284,7 +284,7 @@ archive_write_v7tar_header(struct archive_write *a, struct archive_entry *entry) + * case getting WCS failed. On POSIX, this is a + * normal operation. + */ +- if (p != NULL && p[strlen(p) - 1] != '/') { ++ if (p != NULL && p[0] != '\0' && p[strlen(p) - 1] != '/') { + struct archive_string as; + + archive_string_init(&as); diff --git a/meta/recipes-extended/libarchive/libarchive_3.3.3.bb b/meta/recipes-extended/libarchive/libarchive_3.3.3.bb index eabab16770..46a3d43762 100644 --- a/meta/recipes-extended/libarchive/libarchive_3.3.3.bb +++ b/meta/recipes-extended/libarchive/libarchive_3.3.3.bb @@ -33,6 +33,7 @@ EXTRA_OECONF += "--enable-largefile" SRC_URI = "http://libarchive.org/downloads/libarchive-${PV}.tar.gz \ file://non-recursive-extract-and-list.patch \ + file://bug1066.patch \ " SRC_URI[md5sum] = "4038e366ca5b659dae3efcc744e72120" -- 2.11.0 -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
