{"answers":{"affected":"It affects 9 products.","exploited":"There is no known exploitation of CVE-2019-20788 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2019-20788 is a critical vulnerability in Canonical Ubuntu Linux, published on 23 Apr 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-2019-20788 and fix it if it is affected.\n\nWhat it is: CVE-2019-20788 is a critical vulnerability in Canonical Ubuntu Linux, published on 23 Apr 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-2019-20788 in the wild and no public exploit code.\n\nAffected product: Canonical Ubuntu Linux. 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-2019-20788/ (Markdown: https://insights.sbomify.com/CVE-2019-20788/index.md)","id":"CVE-2019-20788","markdown":"https://insights.sbomify.com/CVE-2019-20788/index.md","name":"CVE-2019-20788","record":{"aliases":["DEBIAN-CVE-2019-20788","GHSA-7397-jpw5-q274","MGASA-2020-0207","UBUNTU-CVE-2019-20788"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"LibVNCServer library","requires_auth":"none","summary":"An integer overflow in LibVNCServer's cursor handling allows attackers to trigger a heap-based buffer overflow, potentially leading to code execution or denial of service.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"libvncserver","vendor":"libvnc_project"},{"product":"simatic_itc1500_firmware","vendor":"siemens"},{"product":"simatic_itc1500_pro_firmware","vendor":"siemens"},{"product":"simatic_itc1900_firmware","vendor":"siemens"},{"product":"simatic_itc1900_pro_firmware","vendor":"siemens"},{"product":"simatic_itc2200_firmware","vendor":"siemens"},{"product":"simatic_itc2200_pro_firmware","vendor":"siemens"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.","ecosystems":[],"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":"Integer overflow in n/a","id":"CVE-2019-20788","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux"],"type":"integer_overflow","year":"2019"},"n_packages":0,"n_references":5,"next":{"headline":"Croos-site scripting in Croogo","id":"CVE-2019-20789"},"packages":[],"prev":{"headline":"Teeworlds before 0.7.4 has an integer overflow when computing a tilemap size.","id":"CVE-2019-20787"},"products":["n/a"],"published":"2020-04-23","related":[{"cvss_score":9.8,"headline":"SaltStack Salt Authentication Bypass","id":"CVE-2020-11651","kev_date_added":"2021-11-03","published":"2020-04-30"},{"cvss_score":9.8,"headline":"OpenSMTPD Remote Code Execution","id":"CVE-2020-7247","kev_date_added":"2022-03-25","published":"2020-01-29"},{"cvss_score":9.8,"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928","kev_date_added":"2022-03-03","published":"2019-09-27"},{"cvss_score":9.8,"headline":"Exim Buffer Overflow","id":"CVE-2018-6789","kev_date_added":"2021-11-03","published":"2018-02-08"},{"cvss_score":9.8,"headline":"Oracle Java SE and Java SE Embedded Remote Code Execution","id":"CVE-2015-2590","kev_date_added":"2022-03-03","published":"2015-07-16"},{"cvss_score":9.8,"headline":"Oracle JRE Remote Code Execution","id":"CVE-2013-0422","kev_date_added":"2022-05-25","published":"2013-01-10"},{"cvss_score":9.8,"headline":"Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution","id":"CVE-2011-3544","kev_date_added":"2022-03-03","published":"2011-10-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2024-08-05","vendors":["n/a"]},"summary":"An integer overflow in LibVNCServer's cursor handling allows attackers to trigger a heap-based buffer overflow, potentially leading to code execution or denial of service.","url":"https://insights.sbomify.com/CVE-2019-20788/"}