{"answers":{"affected":"It affects 4 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-8794 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2020-8794 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 25 Feb 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-2020-8794 and fix it if it is affected.\n\nWhat it is: CVE-2020-8794 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 25 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-8794 exists.\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-2020-8794/ (Markdown: https://insights.sbomify.com/CVE-2020-8794/index.md)","id":"CVE-2020-8794","markdown":"https://insights.sbomify.com/CVE-2020-8794/index.md","name":"CVE-2020-8794","record":{"aliases":["DEBIAN-CVE-2020-8794","DSA-4634-1","GHSA-hmw3-c3g9-px9f","UBUNTU-CVE-2020-8794"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenSMTPD mail server","requires_auth":"none","summary":"Remote attackers can execute arbitrary code on OpenSMTPD servers by exploiting an out-of-bounds read during bounce handling.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"opensmtpd","vendor":"opensmtpd"}],"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-125","name":"Out-of-bounds Read"}],"description":"OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.","ecosystems":[],"exploits":{"exploitdb":2,"first_seen":"2020-02-24","github_poc":0,"max_poc_stars":null,"metasploit":1,"nuclei":0,"refs":[{"date":"2020-02-24","kind":"metasploit","ref":"exploit/unix/local/opensmtpd_oob_read_lpe","stars":null,"title":"OpenSMTPD OOB Read Local Privilege Escalation"},{"date":"2020-02-26","kind":"exploitdb","ref":"48140","stars":null,"title":"OpenSMTPD \u003c 6.6.3p1 - Local Privilege Escalation + Remote Code Execution"},{"date":"2020-03-09","kind":"exploitdb","ref":"48185","stars":null,"title":"OpenSMTPD - OOB Read Local Privilege Escalation (Metasploit)"}],"tier":"weaponised"},"has_fix":true,"headline":"Memory corruption in n/a","id":"CVE-2020-8794","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":11,"next":{"headline":"Missing authorization in n/a","id":"CVE-2020-8795"},"packages":[],"prev":{"headline":"Path traversal in n/a","id":"CVE-2020-8793"},"products":["n/a"],"published":"2020-02-25","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)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Remote attackers can execute arbitrary code on OpenSMTPD servers by exploiting an out-of-bounds read during bounce handling.","url":"https://insights.sbomify.com/CVE-2020-8794/"}