{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20505 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20505 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20505 is a medium-severity vulnerability in IBM PowerVM Hypervisor, published on 29 Jul 2021. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20505 and fix it if it is affected.\n\nWhat it is: CVE-2021-20505 is a medium-severity vulnerability in IBM PowerVM Hypervisor, published on 29 Jul 2021. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-20505 in the wild and no public exploit code.\n\nAffected product: IBM PowerVM Hypervisor. 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-2021-20505/ (Markdown: https://insights.sbomify.com/CVE-2021-20505/index.md)","id":"CVE-2021-20505","markdown":"https://insights.sbomify.com/CVE-2021-20505/index.md","name":"CVE-2021-20505","record":{"aliases":["GHSA-mhgr-vqp5-q6x4"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"IBM PowerVM Hypervisor","requires_auth":"high_privilege","summary":"Attackers with FSP access can decrypt captured PowerVM migration traffic due to a compromised encryption key exchange protocol.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"ibm","cpe":[{"product":"powervm_hypervisor","vendor":"ibm"}],"cvss":{"score":4.4,"severity":"medium","source":"cna","vector":"CVSS:3.0/UI:N/S:U/I:N/C:H/AC:H/PR:H/AV:N/A:N/RC:C/RL:O/E:U","version":"3.0"},"cwes":[],"description":"The PowerVM Logical Partition Mobility(LPM) (PowerVM Hypervisor FW920, FW930, FW940, and FW950) encryption key exchange protocol can be compromised. If an attacker has the ability to capture encrypted LPM network traffic and is able to gain service access to the FSP they can use this information to perform a series of PowerVM service procedures to decrypt the captured migration traffic IBM X-Force ID: 198232","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":"Weak cryptography in PowerVM Hypervisor","id":"CVE-2021-20505","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"weak_cryptography","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Cross-site scripting in Engineering Lifecycle Optimization","id":"CVE-2021-20506"},"packages":[],"prev":{"headline":"Cross-site scripting in Engineering Lifecycle Optimization","id":"CVE-2021-20504"},"products":["PowerVM Hypervisor"],"published":"2021-07-29","related":[{"cvss_score":9.3,"headline":"IBM PowerVM gain access","id":"CVE-2023-30438","kev_date_added":null,"published":"2023-05-17"},{"cvss_score":8.6,"headline":"Security feature bypass in PowerVM Hypervisor","id":"CVE-2021-38918","kev_date_added":null,"published":"2022-01-05"},{"cvss_score":7.6,"headline":"Privilege escalation in PowerVM Hypervisor","id":"CVE-2022-22445","kev_date_added":null,"published":"2022-07-18"},{"cvss_score":7.4,"headline":"Privilege escalation in PowerVM Hypervisor","id":"CVE-2021-38917","kev_date_added":null,"published":"2021-12-10"},{"cvss_score":6.7,"headline":"IBM PowerVM Hypervisor denial of service","id":"CVE-2025-36035","kev_date_added":null,"published":"2025-09-14"},{"cvss_score":6.7,"headline":"IBM PowerVM Hypervisor denial of service","id":"CVE-2023-30440","kev_date_added":null,"published":"2023-05-23"},{"cvss_score":6.3,"headline":"Denial of service in PowerVM Hypervisor","id":"CVE-2021-38937","kev_date_added":null,"published":"2021-12-10"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["IBM"]},"summary":"Attackers with FSP access can decrypt captured PowerVM migration traffic due to a compromised encryption key exchange protocol.","url":"https://insights.sbomify.com/CVE-2021-20505/"}