USN-6474-1: xrdp vulnerabilities

Ubuntu Security Advisory

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. (CVE-2022-23479, CVE-2022-23481, CVE-2022-23483,
CVE-2023-42822)

It was discovered that xrdp improperly handled session establishment
errors. An attacker could potentially use this issue to bypass the
OS-level session restrictions by PAM. (CVE-2023-40184)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds writes. An attacker
could possibly use this issue to cause memory corruption or execute
arbitrary code. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-23468)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS
and Ubuntu 22.04 LTS. (CVE-2022-23480, CVE-2022-23482, CVE-2022-23484)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2022-23477, CVE-2022-23493)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds writes. An attacker
could possibly use this issue to cause memory corruption or execute
arbitrary code. This issue only affected Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2022-23478)

It was discovered that xrdp incorrectly handled validation of
client-supplied data, which could lead to out-of-bounds reads. An attacker
could possibly use this issue to crash the program or extract sensitive
information. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-23613)

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