diff options
Diffstat (limited to 'meta/recipes-extended/libarchive/libarchive/CVE-2018-1000879.patch')
| -rw-r--r-- | meta/recipes-extended/libarchive/libarchive/CVE-2018-1000879.patch | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000879.patch b/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000879.patch deleted file mode 100644 index 9f25932a1a..0000000000 --- a/meta/recipes-extended/libarchive/libarchive/CVE-2018-1000879.patch +++ /dev/null @@ -1,50 +0,0 @@ -CVE: CVE-2018-1000879 -Upstream-Status: Backport -Signed-off-by: Ross Burton <ross.burton@intel.com> - -From 15bf44fd2c1ad0e3fd87048b3fcc90c4dcff1175 Mon Sep 17 00:00:00 2001 -From: Daniel Axtens <dja@axtens.net> -Date: Tue, 4 Dec 2018 14:29:42 +1100 -Subject: [PATCH] Skip 0-length ACL fields - -Currently, it is possible to create an archive that crashes bsdtar -with a malformed ACL: - -Program received signal SIGSEGV, Segmentation fault. -archive_acl_from_text_l (acl=<optimised out>, text=0x7e2e92 "", want_type=<optimised out>, sc=<optimised out>) at libarchive/archive_acl.c:1726 -1726 switch (*s) { -(gdb) p n -$1 = 1 -(gdb) p field[n] -$2 = {start = 0x0, end = 0x0} - -Stop this by checking that the length is not zero before beginning -the switch statement. - -I am pretty sure this is the bug mentioned in the qsym paper [1], -and I was able to replicate it with a qsym + AFL + afl-rb setup. - -[1] https://www.usenix.org/conference/usenixsecurity18/presentation/yun ---- - libarchive/archive_acl.c | 5 +++++ - 1 file changed, 5 insertions(+) - -diff --git a/libarchive/archive_acl.c b/libarchive/archive_acl.c -index 512beee1..7beeee86 100644 ---- a/libarchive/archive_acl.c -+++ b/libarchive/archive_acl.c -@@ -1723,6 +1723,11 @@ archive_acl_from_text_l(struct archive_acl *acl, const char *text, - st = field[n].start + 1; - len = field[n].end - field[n].start; - -+ if (len == 0) { -+ ret = ARCHIVE_WARN; -+ continue; -+ } -+ - switch (*s) { - case 'u': - if (len == 1 || (len == 4 --- -2.20.0 - |