{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-45236 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-45236 is a medium-severity vulnerability in TianoCore edk2, published on 16 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-45236 and fix it if it is affected.\n\nWhat it is: CVE-2023-45236 is a medium-severity vulnerability in TianoCore edk2, published on 16 Jan 2024. 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-2023-45236 in the wild and no public exploit code.\n\nAffected product: TianoCore edk2. 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-2023-45236/ (Markdown: https://insights.sbomify.com/CVE-2023-45236/index.md)","id":"CVE-2023-45236","markdown":"https://insights.sbomify.com/CVE-2023-45236/index.md","name":"CVE-2023-45236","record":{"aliases":["AZL-38425","AZL-39388","AZL-39454","BELL-CVE-2023-45236","DEBIAN-CVE-2023-45236","GHSA-fqc4-ffq5-4r98"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"EDK II firmware","requires_auth":"none","summary":"Predictable TCP Initial Sequence Numbers in EDK II allow attackers to bypass security controls and access confidential data.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"TianoCore","cpe":[{"product":"edk2","vendor":"tianocore"}],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-338","name":"Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)"},{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This\n vulnerability can be exploited by an attacker to gain unauthorized \naccess and potentially lead to a loss of Confidentiality.","ecosystems":[],"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":"Predictable TCP ISNs in EDK II Network Package","id":"CVE-2023-45236","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"Use of a Weak PseudoRandom Number Generator in EDK II Network Package","id":"CVE-2023-45237"},"packages":[],"prev":{"headline":"Buffer Overflow in EDK II Network Package","id":"CVE-2023-45235"},"products":["edk2"],"published":"2024-01-16","related":[{"cvss_score":8.3,"headline":"Buffer Overflow in EDK II Network Package","id":"CVE-2023-45230","kev_date_added":null,"published":"2024-01-16"},{"cvss_score":8.3,"headline":"Buffer Overflow in EDK II Network Package","id":"CVE-2023-45234","kev_date_added":null,"published":"2024-01-16"},{"cvss_score":8.3,"headline":"Buffer Overflow in EDK II Network Package","id":"CVE-2023-45235","kev_date_added":null,"published":"2024-01-16"},{"cvss_score":7.8,"headline":"Denial of service in EDK II","id":"CVE-2021-28210","kev_date_added":null,"published":"2021-06-11"},{"cvss_score":7.8,"headline":"Null dereference in Tianocore EDK2","id":"CVE-2019-14584","kev_date_added":null,"published":"2021-06-03"},{"cvss_score":7.8,"headline":"Privilege escalation in Tianocore","id":"CVE-2017-5731","kev_date_added":null,"published":"2019-10-28"},{"cvss_score":7.5,"headline":"Infinite loop in EDK II Network Package","id":"CVE-2023-45232","kev_date_added":null,"published":"2024-01-16"}],"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":"2025-11-04","vendors":["TianoCore"]},"summary":"Predictable TCP Initial Sequence Numbers in EDK II allow attackers to bypass security controls and access confidential data.","url":"https://insights.sbomify.com/CVE-2023-45236/"}