Details: https://nvd.nist.gov/vuln/detail/CVE-2022-23493
Pick the patch that mentions this vulnerability explicitly. Signed-off-by: Gyorgy Sarvari <[email protected]> --- .../xrdp/xrdp/CVE-2022-23493.patch | 33 +++++++++++++++++++ meta-oe/recipes-support/xrdp/xrdp_0.9.20.bb | 1 + 2 files changed, 34 insertions(+) create mode 100644 meta-oe/recipes-support/xrdp/xrdp/CVE-2022-23493.patch diff --git a/meta-oe/recipes-support/xrdp/xrdp/CVE-2022-23493.patch b/meta-oe/recipes-support/xrdp/xrdp/CVE-2022-23493.patch new file mode 100644 index 0000000000..de3f7a42f3 --- /dev/null +++ b/meta-oe/recipes-support/xrdp/xrdp/CVE-2022-23493.patch @@ -0,0 +1,33 @@ +From 030db5524be7616967ae9e7d26b3d4477cf6082d Mon Sep 17 00:00:00 2001 +From: matt335672 <[email protected]> +Date: Wed, 7 Dec 2022 10:49:06 +0000 +Subject: [PATCH] CVE-2022-23493 + +Check chansrv channel ID on a channel close + +Prevent OOB read if an invalid channel ID is sent. + +CVE: CVE-2022-23493 +Upstream-Status: Backport [https://github.com/neutrinolabs/xrdp/commit/030db5524be7616967ae9e7d26b3d4477cf6082d] +Signed-off-by: Gyorgy Sarvari <[email protected]> +--- + xrdp/xrdp_mm.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/xrdp/xrdp_mm.c b/xrdp/xrdp_mm.c +index 74b0516afa..068424885e 100644 +--- a/xrdp/xrdp_mm.c ++++ b/xrdp/xrdp_mm.c +@@ -1435,6 +1435,12 @@ xrdp_mm_trans_process_drdynvc_channel_close(struct xrdp_mm *self, + return 1; + } + in_uint32_le(s, chansrv_chan_id); ++ if (chansrv_chan_id < 0 || chansrv_chan_id > 255) ++ { ++ LOG(LOG_LEVEL_ERROR, "Attempting to close invalid chansrv channel %d", ++ chansrv_chan_id); ++ return 1; ++ } + chan_id = self->cs2xr_cid_map[chansrv_chan_id]; + /* close dynamic channel */ + error = libxrdp_drdynvc_close(self->wm->session, chan_id); diff --git a/meta-oe/recipes-support/xrdp/xrdp_0.9.20.bb b/meta-oe/recipes-support/xrdp/xrdp_0.9.20.bb index a9107a0e26..f3d11522ac 100644 --- a/meta-oe/recipes-support/xrdp/xrdp_0.9.20.bb +++ b/meta-oe/recipes-support/xrdp/xrdp_0.9.20.bb @@ -26,6 +26,7 @@ SRC_URI = "https://github.com/neutrinolabs/${BPN}/releases/download/v${PV}/${BPN file://CVE-2022-23482.patch \ file://CVE-2022-23483.patch \ file://CVE-2022-23484.patch \ + file://CVE-2022-23493.patch \ " SRC_URI[sha256sum] = "db693401da95b71b4d4e4c99aeb569a546dbdbde343f6d3302b0c47653277abb"
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