{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-40184 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2023-40184 is a low-severity vulnerability in neutrinolabs xrdp, published on 30 Aug 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-40184 and fix it if it is affected.\n\nWhat it is: CVE-2023-40184 is a low-severity vulnerability in neutrinolabs xrdp, published on 30 Aug 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2023-40184 in the wild and no public exploit code.\n\nAffected product: neutrinolabs xrdp. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-40184/ (Markdown: https://insights.sbomify.com/CVE-2023-40184/index.md)","id":"CVE-2023-40184","markdown":"https://insights.sbomify.com/CVE-2023-40184/index.md","name":"CVE-2023-40184","record":{"aliases":["DEBIAN-CVE-2023-40184","GHSA-f489-557v-47jq","MGASA-2023-0276","SUSE-SU-2023:3735-1","SUSE-SU-2023:3830-1","UBUNTU-CVE-2023-40184"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"RDP server","requires_auth":"low_privilege","summary":"Attackers can bypass PAM session restrictions like concurrent session limits by exploiting improper error handling in xrdp session establishment.","user_interaction":"required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"xrdp","vendor":"neutrinolabs"}],"cvss":{"score":2.6,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-755","name":"Improper Handling of Exceptional Conditions"}],"description":"xrdp is an open source remote desktop protocol (RDP) server. In versions prior to 0.9.23 improper handling of session establishment errors allows bypassing OS-level session restrictions. The `auth_start_session` function can return non-zero (1) value on, e.g., PAM error which may result in in session restrictions such as max concurrent sessions per user by PAM (ex ./etc/security/limits.conf) to be bypassed. Users (administrators) don't use restrictions by PAM are not affected. This issue has been addressed in release version 0.9.23. Users are advised to upgrade. There are no known workarounds for this issue.","ecosystems":["SUSE:Linux Enterprise Module for Basesystem 15 SP4","SUSE:Linux Enterprise Module for Basesystem 15 SP5","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Manager Proxy 4.2","SUSE:Manager Server 4.2","openSUSE:Leap 15.4","openSUSE:Leap 15.5"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Improper handling of session establishment errors in xrdp","id":"CVE-2023-40184","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2023"},"n_packages":8,"n_references":6,"next":{"headline":"Shescape on Windows escaping may be bypassed in threaded context","id":"CVE-2023-40185"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP4","fixed":["0.9.13.1-150200.4.24.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4","source":"SUSE-SU-2023:3830-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP5","fixed":["0.9.13.1-150200.4.24.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5","source":"SUSE-SU-2023:3830-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["0.9.10-3.11.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2023:3735-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","fixed":["0.9.10-3.11.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5","source":"SUSE-SU-2023:3735-1"},{"ecosystem":"SUSE:Manager Proxy 4.2","fixed":["0.9.13.1-150200.4.24.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Manager%20Proxy%204.2","source":"SUSE-SU-2023:3830-1"},{"ecosystem":"SUSE:Manager Server 4.2","fixed":["0.9.13.1-150200.4.24.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Manager%20Server%204.2","source":"SUSE-SU-2023:3830-1"},{"ecosystem":"openSUSE:Leap 15.4","fixed":["0.9.13.1-150200.4.24.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/opensuse/xrdp\u0026distro=openSUSE%20Leap%2015.4","source":"SUSE-SU-2023:3830-1"},{"ecosystem":"openSUSE:Leap 15.5","fixed":["0.9.13.1-150200.4.24.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/opensuse/xrdp\u0026distro=openSUSE%20Leap%2015.5","source":"SUSE-SU-2023:3830-1"}],"prev":{"headline":"DataEase has a vulnerability to obtain user cookies","id":"CVE-2023-40183"},"products":["xrdp"],"published":"2023-08-30","related":[{"cvss_score":9.8,"headline":"xrdp: lib_palette_update Heap Buffer Overflow \u0026 RCE","id":"CVE-2026-41252","kev_date_added":null,"published":"2026-07-20"},{"cvss_score":9.3,"headline":"xrdp: RDP MAC signature (dataSignature) never verified on receive — integrity bypass in non-TLS mode","id":"CVE-2026-32105","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.8,"headline":"xrdp: Channel Data Forwarding Fixed-Size Buffer Overflow","id":"CVE-2026-44178","kev_date_added":null,"published":"2026-07-20"},{"cvss_score":8.8,"headline":"xrdp: Fail-open privilege drop in sesexec — child processes may execute as root if setuid fails","id":"CVE-2026-32107","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.7,"headline":"xrdp: Pre-authentication out-of-bounds reads in channel parsers","id":"CVE-2026-33689","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.7,"headline":"xrdp: Heap buffer overflow in EGFX channel","id":"CVE-2026-35512","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.2,"headline":"xrdp: lib_framebuffer_update Has Integer Overflow Heap Info Leak \u0026 ASLR Bypass","id":"CVE-2026-41521","kev_date_added":null,"published":"2026-07-20"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-03","vendors":["neutrinolabs"]},"summary":"Attackers can bypass PAM session restrictions like concurrent session limits by exploiting improper error handling in xrdp session establishment.","url":"https://insights.sbomify.com/CVE-2023-40184/"}