diff options
Diffstat (limited to 'meta-networking/recipes-connectivity/samba/samba/CVE-2023-4091-0002.patch')
| -rw-r--r-- | meta-networking/recipes-connectivity/samba/samba/CVE-2023-4091-0002.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/meta-networking/recipes-connectivity/samba/samba/CVE-2023-4091-0002.patch b/meta-networking/recipes-connectivity/samba/samba/CVE-2023-4091-0002.patch new file mode 100644 index 0000000000..43d3b4929f --- /dev/null +++ b/meta-networking/recipes-connectivity/samba/samba/CVE-2023-4091-0002.patch @@ -0,0 +1,59 @@ +From 8b26f634372f11edcbea33dfd68a3d57889dfcc5 Mon Sep 17 00:00:00 2001 +From: Ralph Boehme <slow@samba.org> +Date: Tue, 1 Aug 2023 13:04:36 +0200 +Subject: [PATCH] CVE-2023-4091: smbd: use open_access_mask for access check in + open_file() + +If the client requested FILE_OVERWRITE[_IF], we're implicitly adding +FILE_WRITE_DATA to the open_access_mask in open_file_ntcreate(), but for the +access check we're using access_mask which doesn't contain the additional +right, which means we can end up truncating a file for which the user has +only read-only access via an SD. + +BUG: https://bugzilla.samba.org/show_bug.cgi?id=15439 + +Signed-off-by: Ralph Boehme <slow@samba.org> + +CVE: CVE-2023-4091 + +Upstream-Status: Backport [https://github.com/samba-team/samba/commit/8b26f634372f11edcbea33dfd68a3d57889dfcc5] + +Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com> +--- + selftest/knownfail.d/samba3.smb2.acls | 1 - + source3/smbd/open.c | 4 ++-- + 2 files changed, 2 insertions(+), 3 deletions(-) + delete mode 100644 selftest/knownfail.d/samba3.smb2.acls + +diff --git a/selftest/knownfail.d/samba3.smb2.acls b/selftest/knownfail.d/samba3.smb2.acls +deleted file mode 100644 +index 18df260..0000000 +--- a/selftest/knownfail.d/samba3.smb2.acls ++++ /dev/null +@@ -1 +0,0 @@ +-^samba3.smb2.acls.OVERWRITE_READ_ONLY_FILE +diff --git a/source3/smbd/open.c b/source3/smbd/open.c +index 2c3bf9e..4bec5cb 100644 +--- a/source3/smbd/open.c ++++ b/source3/smbd/open.c +@@ -1402,7 +1402,7 @@ static NTSTATUS open_file(files_struct *fsp, + conn->cwd_fsp, + smb_fname, + false, +- access_mask); ++ open_access_mask); + + if (!NT_STATUS_IS_OK(status)) { + DEBUG(10, ("open_file: " +@@ -1585,7 +1585,7 @@ static NTSTATUS open_file(files_struct *fsp, + conn->cwd_fsp, + smb_fname, + false, +- access_mask); ++ open_access_mask); + + if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) && + (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) && +-- +2.40.0 + |