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| author |   Hitendra Prajapati <hprajapati@mvista.com> | 2022-06-29 11:24:07 +0530 |
|---|---|---|
| committer |   Steve Sakoman <steve@sakoman.com> | 2022-06-29 05:15:49 -1000 |
| commit | fd9dc688ead5cf0225cba94c380a618e332d548f (patch) | |
| tree | 07eab02d09da8e46d5a753085de39286c1877e10 | |
| parent | 14b3c0ca46a0aa97565a24b7a5116306237d7cfe (diff) | |
| download | openembedded-core-contrib-fd9dc688ead5cf0225cba94c380a618e332d548f.tar.gz | |
grub2: CVE-2021-3981 Incorrect permission in grub.cfg allow unprivileged user to read the file content
Source: https://git.savannah.gnu.org/cgit/grub.git/
MR: 116495
Type: Security Fix
Disposition: Backport from https://git.savannah.gnu.org/cgit/grub.git/diff/util/grub-mkconfig.in?id=0adec29674561034771c13e446069b41ef41e4d4
ChangeID: fce3d59e50320bef247bb981352051b8f953a4fc
Description:
CVE-2021-3981 grub2: Incorrect permission in grub.cfg allow unprivileged user to read the file content.
Affects "grub2 < 2.06"
Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
| -rw-r--r-- | meta/recipes-bsp/grub/files/CVE-2021-3981.patch | 32 | ||||
| -rw-r--r-- | meta/recipes-bsp/grub/grub2.inc | 1 |
2 files changed, 33 insertions, 0 deletions
diff --git a/meta/recipes-bsp/grub/files/CVE-2021-3981.patch b/meta/recipes-bsp/grub/files/CVE-2021-3981.patch new file mode 100644 index 0000000000..e27027ea65 --- /dev/null +++ b/meta/recipes-bsp/grub/files/CVE-2021-3981.patch @@ -0,0 +1,32 @@ +From 67740c43c9326956ea5cd6be77f813b5499a56a5 Mon Sep 17 00:00:00 2001 +From: Hitendra Prajapati <hprajapati@mvista.com> +Date: Mon, 27 Jun 2022 10:15:29 +0530 +Subject: [PATCH] CVE-2021-3981 + +Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/diff/util/grub-mkconfig.in?id=0adec29674561034771c13e446069b41ef41e4d4] +CVE: CVE-2021-3981 +Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com> +--- + util/grub-mkconfig.in | 6 +++++- + 1 file changed, 5 insertions(+), 1 deletion(-) + +diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in +index 9f477ff..ead94a6 100644 +--- a/util/grub-mkconfig.in ++++ b/util/grub-mkconfig.in +@@ -287,7 +287,11 @@ and /etc/grub.d/* files or please file a bug report with + exit 1 + else + # none of the children aborted with error, install the new grub.cfg +- mv -f ${grub_cfg}.new ${grub_cfg} ++ oldumask=$(umask) ++ umask 077 ++ cat ${grub_cfg}.new > ${grub_cfg} ++ umask $oldumask ++ rm -f ${grub_cfg}.new + fi + fi + +-- +2.25.1 + diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc index 0d3f6d05da..9e98d8249d 100644 --- a/meta/recipes-bsp/grub/grub2.inc +++ b/meta/recipes-bsp/grub/grub2.inc @@ -95,6 +95,7 @@ SRC_URI = "${GNU_MIRROR}/grub/grub-${PV}.tar.gz \ file://0044-script-execute-Fix-NULL-dereference-in-grub_script_e.patch \ file://0045-commands-ls-Require-device_name-is-not-NULL-before-p.patch \ file://0046-script-execute-Avoid-crash-when-using-outside-a-func.patch \ + file://CVE-2021-3981.patch\ " SRC_URI[md5sum] = "5ce674ca6b2612d8939b9e6abed32934" SRC_URI[sha256sum] = "f10c85ae3e204dbaec39ae22fa3c5e99f0665417e91c2cb49b7e5031658ba6ea" |