{"answers":{"affected":"4 open source packages ship an affected version, including october/rain. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3311 in the wild and no public exploit code.","fix":"Upgrade october/rain to a fixed version for your release line: 1.0.472 or 1.1.2.","what":"CVE-2021-3311 is a critical authentication bypass vulnerability in Octobercms October, published on 5 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-3311 and fix it if it is affected.\n\nWhat it is: CVE-2021-3311 is a critical authentication bypass vulnerability in Octobercms October, published on 5 Feb 2021. 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-2021-3311 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- october/rain (Packagist): affected all versions; fixed in 1.0.472\n- october/rain (Packagist): affected all versions; fixed in 1.0.472\n- october/rain (Packagist): affected from 1.1.0; fixed in 1.1.2\n- october/rain (Packagist): affected from 1.1.0; fixed in 1.1.2\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-2021-3311/ (Markdown: https://insights.sbomify.com/CVE-2021-3311/index.md)","id":"CVE-2021-3311","markdown":"https://insights.sbomify.com/CVE-2021-3311/index.md","name":"CVE-2021-3311","record":{"aliases":["GHSA-7ggw-h8pp-r95r"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"October CMS","requires_auth":"none","summary":"An attacker with a known old session ID can reactivate it after logout to hijack a user's authenticated session.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"october","vendor":"octobercms"}],"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-613","name":"DEPRECATED: Insufficient Session Expiration"}],"description":"An issue was discovered in October through build 471. It reactivates an old session ID (which had been invalid after a logout) once a new login occurs. NOTE: this violates the intended Auth/Manager.php authentication behavior but, admittedly, is only relevant if an old session ID is known to an attacker.","ecosystems":["Packagist"],"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":"October CMS Session ID not invalidated after logout","id":"CVE-2021-3311","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"octobercms:october","products":["octobercms:october"],"type":"auth_bypass","year":"2021"},"n_packages":4,"n_references":3,"next":{"headline":"XML External Entity Reference in org.opencms:opencms-core","id":"CVE-2021-3312"},"packages":[{"ecosystem":"Packagist","fixed":["1.0.472"],"introduced":["0"],"last_affected":[],"package":"october/rain","purl":null,"source":"GHSA-7ggw-h8pp-r95r"},{"ecosystem":"Packagist","fixed":["1.0.472"],"introduced":["0"],"last_affected":[],"package":"october/rain","purl":"pkg:composer/october/rain","source":"GHSA-7ggw-h8pp-r95r"},{"ecosystem":"Packagist","fixed":["1.1.2"],"introduced":["1.1.0"],"last_affected":[],"package":"october/rain","purl":null,"source":"GHSA-7ggw-h8pp-r95r"},{"ecosystem":"Packagist","fixed":["1.1.2"],"introduced":["1.1.0"],"last_affected":[],"package":"october/rain","purl":"pkg:composer/october/rain","source":"GHSA-7ggw-h8pp-r95r"}],"prev":{"headline":"Path traversal in n/a","id":"CVE-2021-3310"},"products":["n/a"],"published":"2021-02-05","related":[{"cvss_score":8.2,"headline":"October CMS Improper Authentication","id":"CVE-2021-32648","kev_date_added":"2022-01-18","published":"2021-08-26"},{"cvss_score":9.8,"headline":"October CMS File Upload Vulnerability","id":"CVE-2017-1000194","kev_date_added":null,"published":"2017-11-17"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2017-1000196","kev_date_added":null,"published":"2017-11-17"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2017-1000197","kev_date_added":null,"published":"2017-11-17"},{"cvss_score":9.1,"headline":"October CMS safe mode bypass using Twig sandbox escape","id":"CVE-2023-44382","kev_date_added":null,"published":"2023-12-01"},{"cvss_score":8.8,"headline":"Authenticated file write leads to remote code execution in october/system","id":"CVE-2021-32649","kev_date_added":null,"published":"2022-01-14"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2024-08-03","vendors":["n/a"]},"summary":"An attacker with a known old session ID can reactivate it after logout to hijack a user's authenticated session.","url":"https://insights.sbomify.com/CVE-2021-3311/"}