{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-40019 exists.","fix":"No fix has been published for CVE-2023-40019 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-40019 is a high-severity denial of service vulnerability in signalwire freeswitch, published on 15 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-40019 and fix it if it is affected.\n\nWhat it is: CVE-2023-40019 is a high-severity denial of service vulnerability in signalwire freeswitch, published on 15 Sep 2023. 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-2023-40019 exists.\n\nAffected product: signalwire freeswitch. 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-2023-40019/ (Markdown: https://insights.sbomify.com/CVE-2023-40019/index.md)","id":"CVE-2023-40019","markdown":"https://insights.sbomify.com/CVE-2023-40019/index.md","name":"CVE-2023-40019","record":{"aliases":["GHSA-gjj5-79p2-9g3q"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Telecom software stack","requires_auth":"none","summary":"Authorized users can crash FreeSWITCH by sending re-INVITE messages with duplicate codec names, causing internal array overflows.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"freeswitch","vendor":"freeswitch"}],"cvss":{"score":7.5,"severity":"high","source":"cna","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":"FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.10, FreeSWITCH allows authorized users to cause a denial of service attack by sending re-INVITE with SDP containing duplicate codec names. When a call in FreeSWITCH completes codec negotiation, the `codec_string` channel variable is set with the result of the negotiation. On a subsequent re-negotiation, if an SDP is offered that contains codecs with the same names but with different formats, there may be too many codec matches detected by FreeSWITCH leading to overflows of its internal arrays. By abusing this vulnerability, an attacker is able to corrupt stack of FreeSWITCH leading to an undefined behavior of the system or simply crash it. Version 1.10.10 contains a patch for this issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Denial of service in freeswitch","id":"CVE-2023-40019","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Improper Authentication in PrivateUploader","id":"CVE-2023-40020"},"packages":[],"prev":{"headline":"FreeSWITCH allows remote users to trigger out of bounds write by offering an ICE candidate with unknown component ID","id":"CVE-2023-40018"},"products":["freeswitch"],"published":"2023-09-15","related":[{"cvss_score":9.8,"headline":"FreeSWITCH: Pre-authentication heap buffer overflow in `mod_verto` HTTP POST body read","id":"CVE-2026-49841","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":9.8,"headline":"Hardcoded credentials in n/a","id":"CVE-2019-19492","kev_date_added":null,"published":"2019-12-02"},{"cvss_score":9.1,"headline":"FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing","id":"CVE-2026-49840","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":8.6,"headline":"FreeSWITCH susceptible to Denial of Service via SIP flooding","id":"CVE-2021-41145","kev_date_added":null,"published":"2021-10-25"},{"cvss_score":7.5,"headline":"Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion","id":"CVE-2026-45771","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":7.5,"headline":"FreeSWITCH: Out-of-bounds memory access in core STUN attribute parsing","id":"CVE-2026-49475","kev_date_added":null,"published":"2026-06-09"},{"cvss_score":7.5,"headline":"FreeSWITCH: Pre-authentication bandwidth amplification via `mod_verto` speed-test frames","id":"CVE-2026-49842","kev_date_added":null,"published":"2026-06-09"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-09-25","vendors":["signalwire"]},"summary":"Authorized users can crash FreeSWITCH by sending re-INVITE messages with duplicate codec names, causing internal array overflows.","url":"https://insights.sbomify.com/CVE-2023-40019/"}