{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-13998 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-13998 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-13998 is a high-severity vulnerability in n/a, published on 11 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-2020-13998 and fix it if it is affected.\n\nWhat it is: CVE-2020-13998 is a high-severity vulnerability in n/a, published on 11 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-2020-13998 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2020-13998/ (Markdown: https://insights.sbomify.com/CVE-2020-13998/index.md)","id":"CVE-2020-13998","markdown":"https://insights.sbomify.com/CVE-2020-13998/index.md","name":"CVE-2020-13998","record":{"aliases":["GHSA-5x67-frfj-mmvh"],"analysis":{"component_type":"server_software","fix_type":"end_of_life","impacts":["data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Citrix XenApp","requires_auth":"none","summary":"Remote attackers can enumerate valid usernames on Citrix XenApp servers when two-factor authentication is enabled, revealing user existence.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"xenapp","vendor":"citrix"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-203","name":"Observable Discrepancy"},{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"Citrix XenApp 6.5, when 2FA is enabled, allows a remote unauthenticated attacker to ascertain whether a user exists on the server, because the 2FA error page only occurs after a valid username is entered. NOTE: This vulnerability only affects products that are no longer supported by the maintainer","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Information disclosure in n/a","id":"CVE-2020-13998","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Integer overflow in n/a","id":"CVE-2020-13999"},"packages":[],"prev":{"headline":"Shopware database password is leaked to an unauthenticated users","id":"CVE-2020-13997"},"products":["n/a"],"published":"2020-06-11","related":[{"cvss_score":9.8,"headline":"Security feature bypass in n/a","id":"CVE-2016-6493","kev_date_added":null,"published":"2016-08-19"},{"cvss_score":9.3,"headline":"Code injection in n/a","id":"CVE-2012-5161","kev_date_added":null,"published":"2012-12-26"},{"cvss_score":7.5,"headline":"Missing authorization in n/a","id":"CVE-2016-4810","kev_date_added":null,"published":"2016-06-01"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Remote attackers can enumerate valid usernames on Citrix XenApp servers when two-factor authentication is enabled, revealing user existence.","url":"https://insights.sbomify.com/CVE-2020-13998/"}