{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2017-11786 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2017-11786 yet. Limit exposure of the affected software until one is available.","what":"CVE-2017-11786 is a high-severity authentication bypass vulnerability in Microsoft Corporation Skype for Business, published on 13 Oct 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2017-11786 and fix it if it is affected.\n\nWhat it is: CVE-2017-11786 is a high-severity authentication bypass vulnerability in Microsoft Corporation Skype for Business, published on 13 Oct 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2017-11786 in the wild and no public exploit code.\n\nAffected product: Microsoft Corporation Skype for Business. 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-2017-11786/ (Markdown: https://insights.sbomify.com/CVE-2017-11786/index.md)","id":"CVE-2017-11786","markdown":"https://insights.sbomify.com/CVE-2017-11786/index.md","name":"CVE-2017-11786","record":{"aliases":["GHSA-2xjh-35wj-vw46"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["account_takeover","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Skype for Business","requires_auth":"none","summary":"Attackers can steal reusable authentication hashes to hijack accounts and escalate privileges in Skype for Business.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"lync","vendor":"microsoft"},{"product":"skype_for_business","vendor":"microsoft"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-294","name":"Authentication Bypass by Capture-replay"}],"description":"Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka \"Skype for Business Elevation of Privilege Vulnerability.\"","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":"Auth bypass in Skype for Business","id":"CVE-2017-11786","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2017"},"n_packages":0,"n_references":3,"next":{"headline":"Denial of service in Windows search","id":"CVE-2017-11788"},"packages":[],"prev":{"headline":"Information disclosure in Windows Kernel","id":"CVE-2017-11785"},"products":["Skype for Business"],"published":"2017-10-13","related":[{"cvss_score":9.8,"headline":"Microsoft Office Elevation of Privilege Vulnerability","id":"CVE-2020-1025","kev_date_added":null,"published":"2020-07-14"},{"cvss_score":9.3,"headline":"Use after free in n/a","id":"CVE-2013-1302","kev_date_added":null,"published":"2013-05-15"},{"cvss_score":9.3,"headline":"Path traversal in n/a","id":"CVE-2012-1849","kev_date_added":null,"published":"2012-06-12"},{"cvss_score":8.8,"headline":"Code injection in Microsoft Lync","id":"CVE-2018-8311","kev_date_added":null,"published":"2018-07-11"},{"cvss_score":8.8,"headline":"Memory corruption in Uniscribe","id":"CVE-2017-0283","kev_date_added":null,"published":"2017-06-15"},{"cvss_score":8.8,"headline":"Memory corruption in Graphics","id":"CVE-2017-8527","kev_date_added":null,"published":"2017-06-15"}],"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":"2024-09-16","vendors":["Microsoft Corporation"]},"summary":"Attackers can steal reusable authentication hashes to hijack accounts and escalate privileges in Skype for Business.","url":"https://insights.sbomify.com/CVE-2017-11786/"}