{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-4044 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-4044 is a high-severity memory corruption vulnerability in neutrinolabs xrdp, published on 30 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-4044 and fix it if it is affected.\n\nWhat it is: CVE-2020-4044 is a high-severity memory corruption vulnerability in neutrinolabs xrdp, published on 30 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-4044 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-2020-4044/ (Markdown: https://insights.sbomify.com/CVE-2020-4044/index.md)","id":"CVE-2020-4044","markdown":"https://insights.sbomify.com/CVE-2020-4044/index.md","name":"CVE-2020-4044","record":{"aliases":["DEBIAN-CVE-2020-4044","DLA-2319-1","DSA-4737-1","GHSA-j9fv-6fwf-p3g4","MGASA-2021-0016","SUSE-SU-2020:1918-1","SUSE-SU-2020:1933-1","SUSE-SU-2020:1991-1","SUSE-SU-2020:2142-1","UBUNTU-CVE-2020-4044","USN-6469-1","openSUSE-SU-2020:0999-1","openSUSE-SU-2020:1200-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"XRDP remote desktop server","requires_auth":"none","summary":"Local attackers can crash the xrdp-sesman service via buffer overflow and impersonate it to steal credentials or hijack sessions.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"xrdp","vendor":"neutrinolabs"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"The xrdp-sesman service before version 0.9.13.1 can be crashed by connecting over port 3350 and supplying a malicious payload. Once the xrdp-sesman process is dead, an unprivileged attacker on the server could then proceed to start their own imposter sesman service listening on port 3350. This will allow them to capture any user credentials that are submitted to XRDP and approve or reject arbitrary login credentials. For xorgxrdp sessions in particular, this allows an unauthorized user to hijack an existing session. This is a buffer overflow attack, so there may be a risk of arbitrary code execution as well.","ecosystems":["SUSE:Enterprise Storage 5","SUSE:HPE Helion OpenStack 8","SUSE:Linux Enterprise High Performance Computing 15-ESPOS","SUSE:Linux Enterprise High Performance Computing 15-LTSS","SUSE:Linux Enterprise Module for Basesystem 15 SP1","SUSE:Linux Enterprise Module for Basesystem 15 SP2","SUSE:Linux Enterprise Server 12 SP3-BCL","SUSE:Linux Enterprise Server 12 SP3-LTSS","SUSE:Linux Enterprise Server 12 SP4-LTSS","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server 15-LTSS","SUSE:Linux Enterprise Server for SAP Applications 12 SP3","SUSE:Linux Enterprise Server for SAP Applications 12 SP4","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 15","SUSE:OpenStack Cloud 8","SUSE:OpenStack Cloud 9","SUSE:OpenStack Cloud Crowbar 8","SUSE:OpenStack Cloud Crowbar 9","openSUSE:Leap 15.1","openSUSE:Leap 15.2"],"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":"Local users can perform a buffer overflow attack against the xrdp-sesman service and then impersonate it","id":"CVE-2020-4044","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":21,"n_references":7,"next":{"headline":"Information disclosure in SSB-DB","id":"CVE-2020-4045"},"packages":[{"ecosystem":"SUSE:Enterprise Storage 5","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Enterprise%20Storage%205","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:HPE Helion OpenStack 8","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=HPE%20Helion%20OpenStack%208","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-ESPOS","fixed":["0.9.6-4.8.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS","source":"SUSE-SU-2020:1933-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-LTSS","fixed":["0.9.6-4.8.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS","source":"SUSE-SU-2020:1933-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP1","fixed":["0.9.6-4.8.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1","source":"SUSE-SU-2020:1933-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP2","fixed":["0.9.13.1-4.3.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2","source":"SUSE-SU-2020:2142-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3-BCL","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3-LTSS","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP4-LTSS","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["0.9.10-3.3.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2020:1918-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15-LTSS","fixed":["0.9.6-4.8.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS","source":"SUSE-SU-2020:1933-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP3","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP4","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","fixed":["0.9.10-3.3.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5","source":"SUSE-SU-2020:1918-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15","fixed":["0.9.6-4.8.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015","source":"SUSE-SU-2020:1933-1"},{"ecosystem":"SUSE:OpenStack Cloud 8","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20OpenStack%20Cloud%208","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:OpenStack Cloud 9","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20OpenStack%20Cloud%209","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:OpenStack Cloud Crowbar 8","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20OpenStack%20Cloud%20Crowbar%208","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"SUSE:OpenStack Cloud Crowbar 9","fixed":["0.9.0~git.1456906198.f422461-21.27.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/suse/xrdp\u0026distro=SUSE%20OpenStack%20Cloud%20Crowbar%209","source":"SUSE-SU-2020:1991-1"},{"ecosystem":"openSUSE:Leap 15.1","fixed":["0.9.6-lp151.4.6.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/opensuse/xrdp\u0026distro=openSUSE%20Leap%2015.1","source":"openSUSE-SU-2020:0999-1"},{"ecosystem":"openSUSE:Leap 15.2","fixed":["0.9.13.1-lp152.3.3.1"],"introduced":["0"],"last_affected":[],"package":"xrdp","purl":"pkg:rpm/opensuse/xrdp\u0026distro=openSUSE%20Leap%2015.2","source":"openSUSE-SU-2020:1200-1"}],"prev":{"headline":"Phar unserialization vulnerability in phpMussel","id":"CVE-2020-4043"},"products":["xrdp"],"published":"2020-06-30","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":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["neutrinolabs"]},"summary":"Local attackers can crash the xrdp-sesman service via buffer overflow and impersonate it to steal credentials or hijack sessions.","url":"https://insights.sbomify.com/CVE-2020-4044/"}