{"answers":{"affected":"It affects 2 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6246 exists.","fix":"Apply the vendor's patch.","what":"CVE-2023-6246 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 31 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-6246 and fix it if it is affected.\n\nWhat it is: CVE-2023-6246 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 31 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6246 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-2023-6246/ (Markdown: https://insights.sbomify.com/CVE-2023-6246/index.md)","id":"CVE-2023-6246","markdown":"https://insights.sbomify.com/CVE-2023-6246/index.md","name":"CVE-2023-6246","record":{"aliases":["AZL-34735","BELL-CVE-2023-6246","DEBIAN-CVE-2023-6246","GHSA-p6rw-gvvh-q8v4","UBUNTU-CVE-2023-6246","openSUSE-SU-2024:13647-1"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["privilege_escalation","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"glibc C library","requires_auth":"none","summary":"A heap-based buffer overflow in glibc's syslog function allows local attackers to cause crashes or escalate privileges.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"glibc","vendor":"gnu"}],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when the openlog function was not called, or called with the ident argument set to NULL, and the program name (the basename of argv[0]) is bigger than 1024 bytes, resulting in an application crash or local privilege escalation. This issue affects glibc 2.36 and newer.","ecosystems":["openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":"2024-03-02","github_poc":2,"max_poc_stars":8,"metasploit":0,"nuclei":0,"refs":[{"date":"2024-03-02T15:45:52Z","kind":"github_poc","ref":"https://github.com/elpe-pinillo/CVE-2023-6246","stars":8,"title":null},{"date":"2026-04-06T19:24:44Z","kind":"github_poc","ref":"https://github.com/SimoesCTT/CTT-Vsyslog-Vortex-CVE-2023-6246","stars":0,"title":"CVE-2023-6246 glibc __vsyslog_internal() heap buffer overflow exploitation using Convergent Time Theory (α = 0.0302011). 33-layer temporal heap spray + phase-locked trigger for reliable local privilege escalation."}],"tier":"weaponised"},"has_fix":true,"headline":"Glibc: heap-based buffer overflow in __vsyslog_internal()","id":"CVE-2023-6246","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","gnu:glibc"],"type":"memory_corruption","year":"2023"},"n_packages":1,"n_references":12,"next":{"headline":"Null dereference in OpenVPN 3 Core Library","id":"CVE-2023-6247"},"packages":[{"ecosystem":"openSUSE:Tumbleweed","fixed":["2.39-1.2"],"introduced":["0"],"last_affected":[],"package":"glibc","purl":"pkg:rpm/opensuse/glibc\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13647-1"}],"prev":{"headline":"Infinite decoding loop through specially crafted payload","id":"CVE-2023-6245"},"products":["Fedora","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","glibc"],"published":"2024-01-31","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":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["Fedora","Red Hat","n/a"]},"summary":"A heap-based buffer overflow in glibc's syslog function allows local attackers to cause crashes or escalate privileges.","url":"https://insights.sbomify.com/CVE-2023-6246/"}