{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-11923 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-11923 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-11923 is a high-severity denial of service vulnerability in Facebook Mcrouter, published on 4 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-11923 and fix it if it is affected.\n\nWhat it is: CVE-2019-11923 is a high-severity denial of service vulnerability in Facebook Mcrouter, published on 4 Dec 2019. 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-2019-11923 in the wild and no public exploit code.\n\nAffected product: Facebook Mcrouter. 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-2019-11923/ (Markdown: https://insights.sbomify.com/CVE-2019-11923/index.md)","id":"CVE-2019-11923","markdown":"https://insights.sbomify.com/CVE-2019-11923/index.md","name":"CVE-2019-11923","record":{"aliases":["GHSA-wjxh-p937-x4v8"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Memcached proxy","requires_auth":"none","summary":"An attacker can cause resource exhaustion and denial of service in Mcrouter by exploiting a lack of maximum length enforcement in the deprecated ASCII parser.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"facebook","cpe":[{"product":"mcrouter","vendor":"facebook"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"In Mcrouter prior to v0.41.0, the deprecated ASCII parser would allocate a buffer to a user-specified length with no maximum length enforced, allowing for resource exhaustion or denial of service.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Denial of service in Mcrouter","id":"CVE-2019-11923","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2019"},"n_packages":0,"n_references":3,"next":{"headline":"Denial of service in fizz","id":"CVE-2019-11924"},"packages":[],"prev":{"headline":"Race condition in Zstandard","id":"CVE-2019-11922"},"products":["Mcrouter"],"published":"2019-12-04","related":[{"cvss_score":7.5,"headline":"Denial of service in Mcrouter","id":"CVE-2019-11937","kev_date_added":null,"published":"2019-12-04"}],"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":"2024-08-04","vendors":["Facebook"]},"summary":"An attacker can cause resource exhaustion and denial of service in Mcrouter by exploiting a lack of maximum length enforcement in the deprecated ASCII parser.","url":"https://insights.sbomify.com/CVE-2019-11923/"}