A flaw was found in the QEMU virtual crypto device while handling data encryption/decryption requests in virtio_crypto_handle_sym_req. There is no check for the value of `src_len` and `dst_len` in virtio_crypto_sym_op_helper, potentially leading to a heap buffer overflow when the two values differ.
References: https://nvd.nist.gov/vuln/detail/CVE-2023-3180 Upstream patches: https://gitlab.com/qemu-project/qemu/-/commit/49f1e02bac166821c712534aaa775f50e1afe17f Signed-off-by: Archana Polampalli <archana.polampa...@windriver.com> --- meta/recipes-devtools/qemu/qemu.inc | 1 + .../qemu/qemu/CVE-2023-3180.patch | 49 +++++++++++++++++++ 2 files changed, 50 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2023-3180.patch diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index 3347a99e19..d77c376bb6 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -99,6 +99,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2023-2861.patch \ file://CVE-2020-14394.patch \ file://CVE-2023-3354.patch \ + file://CVE-2023-3180.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2023-3180.patch b/meta/recipes-devtools/qemu/qemu/CVE-2023-3180.patch new file mode 100644 index 0000000000..5ec7dd0aa0 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2023-3180.patch @@ -0,0 +1,49 @@ +From 49f1e02bac166821c712534aaa775f50e1afe17f Mon Sep 17 00:00:00 2001 +From: zhenwei pi <pizhen...@bytedance.com> +Date: Thu, 3 Aug 2023 10:43:13 +0800 +Subject: [PATCH] virtio-crypto: verify src&dst buffer length for sym request + +For symmetric algorithms, the length of ciphertext must be as same +as the plaintext. +The missing verification of the src_len and the dst_len in +virtio_crypto_sym_op_helper() may lead buffer overflow/divulged. + +This patch is originally written by Yiming Tao for QEMU-SECURITY, +resend it(a few changes of error message) in qemu-devel. + +Fixes: CVE-2023-3180 +Fixes: 04b9b37edda("virtio-crypto: add data queue processing handler") +Cc: Gonglei <arei.gong...@huawei.com> +Cc: Mauro Matteo Cascella <mcasc...@redhat.com> +Cc: Yiming Tao <ta...@zju.edu.cn> +Signed-off-by: zhenwei pi <pizhen...@bytedance.com> +Message-Id: <20230803024314.29962-2-pizhen...@bytedance.com> +Reviewed-by: Michael S. Tsirkin <m...@redhat.com> +Signed-off-by: Michael S. Tsirkin <m...@redhat.com> +(cherry picked from commit 9d38a8434721a6479fe03fb5afb150ca793d3980) +Signed-off-by: Michael Tokarev <m...@tls.msk.ru> + +Upstream-Status: Backport [https://gitlab.com/qemu-project/qemu/-/commit/49f1e02bac166821c712534aaa775f50e1afe17f] +CVE: CVE-2023-3180 +--- + hw/virtio/virtio-crypto.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c +index a1d122b9aa..ccaa704530 100644 +--- a/hw/virtio/virtio-crypto.c ++++ b/hw/virtio/virtio-crypto.c +@@ -635,6 +635,11 @@ virtio_crypto_sym_op_helper(VirtIODevice *vdev, + return NULL; + } + ++ if (unlikely(src_len != dst_len)) { ++ virtio_error(vdev, "sym request src len is different from dst len"); ++ return NULL; ++ } ++ + max_len = (uint64_t)iv_len + aad_len + src_len + dst_len + hash_result_len; + if (unlikely(max_len > vcrypto->conf.max_size)) { + virtio_error(vdev, "virtio-crypto too big length"); +-- +2.40.0 -- 2.40.0
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