{"answers":{"affected":"It affects 6 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-25136 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2023-25136 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 3 Feb 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-2023-25136 and fix it if it is affected.\n\nWhat it is: CVE-2023-25136 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 3 Feb 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-2023-25136 exists.\n\nAffected product: Fedoraproject Fedora. 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-2023-25136/ (Markdown: https://insights.sbomify.com/CVE-2023-25136/index.md)","id":"CVE-2023-25136","markdown":"https://insights.sbomify.com/CVE-2023-25136/index.md","name":"CVE-2023-25136","record":{"aliases":["ALSA-2023:2645","BELL-CVE-2023-25136","DEBIAN-CVE-2023-25136","GHSA-w62j-g234-3f6f","JLSEC-2026-66","OESA-2023-1063","OESA-2023-1064","RHSA-2023:2645"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenSSH server","requires_auth":"none","summary":"Unauthenticated remote attackers can exploit a double-free in OpenSSH to potentially execute arbitrary code or crash the service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"500f_firmware","vendor":"netapp"},{"product":"a250_firmware","vendor":"netapp"},{"product":"c250_firmware","vendor":"netapp"},{"product":"ontap_select_deploy_administration_utility","vendor":"netapp"},{"product":"openssh","vendor":"openbsd"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-415","name":"Double Free"}],"description":"OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states \"remote code execution is theoretically possible.\"","ecosystems":["AlmaLinux:9","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::baseos"],"exploits":{"exploitdb":0,"first_seen":"2023-02-07","github_poc":11,"max_poc_stars":108,"metasploit":0,"nuclei":0,"refs":[{"date":"2023-02-22T19:44:08Z","kind":"github_poc","ref":"https://github.com/Christbowel/CVE-2023-25136","stars":108,"title":"OpenSSH 9.1 vulnerability mass scan and exploit"},{"date":"2023-04-18T21:47:47Z","kind":"github_poc","ref":"https://github.com/adhikara13/CVE-2023-25136","stars":48,"title":"OpenSSH Pre-Auth Double Free CVE-2023-25136 POC"},{"date":"2023-02-07T15:33:41Z","kind":"github_poc","ref":"https://github.com/jfrog/jfrog-CVE-2023-25136-OpenSSH_Double-Free","stars":41,"title":null},{"date":"2023-04-28T19:46:03Z","kind":"github_poc","ref":"https://github.com/nhakobyan685/CVE-2023-25136","stars":8,"title":"OpenSSH 9.1 vulnerability mass scan and exploit"},{"date":"2023-06-30T09:34:36Z","kind":"github_poc","ref":"https://github.com/H4K6/CVE-2023-25136","stars":5,"title":"OpenSSH 9.1漏洞大规模扫描和利用"},{"date":"2023-02-14T20:13:16Z","kind":"github_poc","ref":"https://github.com/ticofookfook/CVE-2023-25136","stars":3,"title":null},{"date":"2023-06-03T12:36:42Z","kind":"github_poc","ref":"https://github.com/axylisdead/CVE-2023-25136_POC","stars":3,"title":"CVE-2023-25136 POC written by axylisdead"},{"date":"2023-09-21T12:05:35Z","kind":"github_poc","ref":"https://github.com/malvika-thakur/CVE-2023-25136","stars":3,"title":"OpenSSH Pre-Auth Double Free CVE-2023-25136 – Writeup and Proof-of-Concept"}],"tier":"weaponised"},"has_fix":true,"headline":"Memory corruption in n/a","id":"CVE-2023-25136","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","netapp:ontap_select_deploy_administration_utility","openbsd:openssh"],"type":"memory_corruption","year":"2023"},"n_packages":28,"n_references":16,"next":{"headline":"Memory corruption in n/a","id":"CVE-2023-25139"},"packages":[{"ecosystem":"AlmaLinux:9","fixed":["8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh","purl":"pkg:rpm/almalinux/openssh","source":"ALSA-2023:2645"},{"ecosystem":"AlmaLinux:9","fixed":["8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-askpass","purl":"pkg:rpm/almalinux/openssh-askpass","source":"ALSA-2023:2645"},{"ecosystem":"AlmaLinux:9","fixed":["8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-clients","purl":"pkg:rpm/almalinux/openssh-clients","source":"ALSA-2023:2645"},{"ecosystem":"AlmaLinux:9","fixed":["8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-keycat","purl":"pkg:rpm/almalinux/openssh-keycat","source":"ALSA-2023:2645"},{"ecosystem":"AlmaLinux:9","fixed":["8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-server","purl":"pkg:rpm/almalinux/openssh-server","source":"ALSA-2023:2645"},{"ecosystem":"AlmaLinux:9","fixed":["0.10.4-5.29.el9_2"],"introduced":["0"],"last_affected":[],"package":"pam_ssh_agent_auth","purl":"pkg:rpm/almalinux/pam_ssh_agent_auth","source":"ALSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-askpass","purl":"pkg:rpm/redhat/openssh-askpass","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-askpass-debuginfo","purl":"pkg:rpm/redhat/openssh-askpass-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-clients-debuginfo","purl":"pkg:rpm/redhat/openssh-clients-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-debuginfo","purl":"pkg:rpm/redhat/openssh-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-debugsource","purl":"pkg:rpm/redhat/openssh-debugsource","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-keycat-debuginfo","purl":"pkg:rpm/redhat/openssh-keycat-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-server-debuginfo","purl":"pkg:rpm/redhat/openssh-server-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-sk-dummy-debuginfo","purl":"pkg:rpm/redhat/openssh-sk-dummy-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:0.10.4-5.29.el9_2"],"introduced":["0"],"last_affected":[],"package":"pam_ssh_agent_auth","purl":"pkg:rpm/redhat/pam_ssh_agent_auth","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:0.10.4-5.29.el9_2"],"introduced":["0"],"last_affected":[],"package":"pam_ssh_agent_auth-debuginfo","purl":"pkg:rpm/redhat/pam_ssh_agent_auth-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh","purl":"pkg:rpm/redhat/openssh","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-askpass-debuginfo","purl":"pkg:rpm/redhat/openssh-askpass-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-clients","purl":"pkg:rpm/redhat/openssh-clients","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-clients-debuginfo","purl":"pkg:rpm/redhat/openssh-clients-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-debuginfo","purl":"pkg:rpm/redhat/openssh-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-debugsource","purl":"pkg:rpm/redhat/openssh-debugsource","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-keycat","purl":"pkg:rpm/redhat/openssh-keycat","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-keycat-debuginfo","purl":"pkg:rpm/redhat/openssh-keycat-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-server","purl":"pkg:rpm/redhat/openssh-server","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-server-debuginfo","purl":"pkg:rpm/redhat/openssh-server-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:8.7p1-29.el9_2"],"introduced":["0"],"last_affected":[],"package":"openssh-sk-dummy-debuginfo","purl":"pkg:rpm/redhat/openssh-sk-dummy-debuginfo","source":"RHSA-2023:2645"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:0.10.4-5.29.el9_2"],"introduced":["0"],"last_affected":[],"package":"pam_ssh_agent_auth-debuginfo","purl":"pkg:rpm/redhat/pam_ssh_agent_auth-debuginfo","source":"RHSA-2023:2645"}],"prev":{"headline":"Deserialization in n/a","id":"CVE-2023-25135"},"products":["n/a"],"published":"2023-02-03","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["n/a"]},"summary":"Unauthenticated remote attackers can exploit a double-free in OpenSSH to potentially execute arbitrary code or crash the service.","url":"https://insights.sbomify.com/CVE-2023-25136/"}