redis: Refine CVE-2022-0543 status description

Refine the CVE_STATUS description for CVE-2022-0543 to provide
a more precise explanation of this Debian-specific vulnerability.

The vulnerability originates from Debian's packaging methodology,
which loads system-wide Lua libraries (lua-cjson, lua-cmsgpack),
enabling Lua sandbox escape. Upstream Redis builds, including
those built by Yocto/OpenEmbedded, utilize embedded Lua from the
deps/ directory and are therefore not affected by this issue.

It is also fixed in Debian with this commit:
https://salsa.debian.org/lamby/pkg-redis/-/commit/c7fd665150dc4769402cae97d1152b3c6e4366f0

References:
- https://www.ubercomp.com/posts/2022-01-20_redis_on_debian_rce
- https://nvd.nist.gov/vuln/detail/CVE-2022-0543

Signed-off-by: Deepak Rathore <deeratho@cisco.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/meta-oe/recipes-extended/redis/redis_7.2.12.bb b/meta-oe/recipes-extended/redis/redis_7.2.12.bb
index 6527fb6996..0989ed5e8d 100644
--- a/meta-oe/recipes-extended/redis/redis_7.2.12.bb
+++ b/meta-oe/recipes-extended/redis/redis_7.2.12.bb
@@ -78,4 +78,9 @@ INITSCRIPT_PARAMS = "defaults 87"
 SYSTEMD_SERVICE:${PN} = "redis.service"
 
 CVE_STATUS[CVE-2022-3734] = "not-applicable-platform: CVE only applies for Windows."
-CVE_STATUS[CVE-2022-0543] = "not-applicable-platform: Debian-specific CVE"
+# The vulnerability originates from Debian's packaging methodology,
+# which loads system-wide Lua libraries (lua-cjson, lua-cmsgpack),
+# enabling Lua sandbox escape. Upstream Redis builds, including
+# those built by Yocto/OpenEmbedded, utilize embedded Lua from the
+# deps/ directory and are therefore not affected by this issue.
+CVE_STATUS[CVE-2022-0543] = "not-applicable-config: Debian-specific packaging issue caused by loading system-wide Lua libraries; upstream builds use embedded Lua and are not affected"