{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4039 exists.","fix":"Apply the vendor's patch.","what":"CVE-2023-4039 is a medium-severity vulnerability in Arm GNU Toolchain, published on 13 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-2023-4039 and fix it if it is affected.\n\nWhat it is: CVE-2023-4039 is a medium-severity vulnerability in Arm GNU Toolchain, published on 13 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-2023-4039 exists.\n\nAffected product: Arm GNU Toolchain. 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-2023-4039/ (Markdown: https://insights.sbomify.com/CVE-2023-4039/index.md)","id":"CVE-2023-4039","markdown":"https://insights.sbomify.com/CVE-2023-4039/index.md","name":"CVE-2023-4039","record":{"aliases":["ALPINE-CVE-2023-4039","AZL-28769","AZL-34695","DEBIAN-CVE-2023-4039","ECHO-4f67-4add-cfdb","MINI-8q24-vc8f-v8x5","OESA-2023-1735","OESA-2025-1042","SUSE-SU-2023:3640-1","SUSE-SU-2023:3661-1","SUSE-SU-2023:3686-1","SUSE-SU-2023:4162-1","SUSE-SU-2023:4458-1","SUSE-SU-2023:4480-1","SUSE-SU-2024:0045-1","UBUNTU-CVE-2023-4039","USN-7700-1","openSUSE-SU-2024:13233-1","openSUSE-SU-2024:13234-1","openSUSE-SU-2024:13235-1"],"analysis":{"component_type":"developer_tool","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"GCC compiler","requires_auth":"none","summary":"GCC's stack protector fails to detect overflows in dynamically-sized local variables on AArch64, allowing attackers to bypass security checks and potentially execute code.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Arm","cpe":[{"product":"gcc","vendor":"gnu"}],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-693","name":"Protection Mechanism Failure"}],"description":"**DISPUTED**A failure in the -fstack-protector feature in GCC-based toolchains \nthat target AArch64 allows an attacker to exploit an existing buffer \noverflow in dynamically-sized local variables in your application \nwithout this being detected. This stack-protector failure only applies \nto C99-style dynamically-sized local variables or those created using \nalloca(). The stack-protector operates as intended for statically-sized \nlocal variables.\n\nThe default behavior when the stack-protector \ndetects an overflow is to terminate your application, resulting in \ncontrolled loss of availability. An attacker who can exploit a buffer \noverflow without triggering the stack-protector might be able to change \nprogram flow control to cause an uncontrolled loss of availability or to\n go further and affect confidentiality or integrity. NOTE: The GCC project argues that this is a missed hardening bug and not a vulnerability by itself.","ecosystems":["SUSE:Enterprise Storage 7","SUSE:Enterprise Storage 7.1","SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS","SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS","SUSE:Linux Enterprise Installer Updates 15 SP1","SUSE:Linux Enterprise Installer Updates 15 SP2","SUSE:Linux Enterprise Installer Updates 15 SP3","SUSE:Linux Enterprise Installer Updates 15 SP4","SUSE:Linux Enterprise Installer Updates 15 SP5","SUSE:Linux Enterprise Micro 5.1","SUSE:Linux Enterprise Micro 5.2","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Basesystem 15 SP4","SUSE:Linux Enterprise Module for Basesystem 15 SP5","SUSE:Linux Enterprise Module for Development Tools 15 SP4","SUSE:Linux Enterprise Module for Development Tools 15 SP5","SUSE:Linux Enterprise Module for Legacy 15 SP4","SUSE:Linux Enterprise Module for Package Hub 15 SP4","SUSE:Linux Enterprise Module for Package Hub 15 SP5","SUSE:Linux Enterprise Module for Toolchain 12","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server 15 SP1-LTSS","SUSE:Linux Enterprise Server 15 SP2-LTSS","SUSE:Linux Enterprise Server 15 SP3-LTSS","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 15 SP1","SUSE:Linux Enterprise Server for SAP Applications 15 SP2","SUSE:Linux Enterprise Server for SAP Applications 15 SP3","SUSE:Manager Proxy 4.2","SUSE:Manager Server 4.2","openSUSE:Leap 15.4","openSUSE:Leap 15.5","openSUSE:Leap Micro 5.3","openSUSE:Leap Micro 5.4","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"GCC's-fstack-protector fails to guard dynamically-sized local variables on AArch64","id":"CVE-2023-4039","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2023"},"n_packages":133,"n_references":2,"next":{"headline":"Missing authorization in Stripe Payment Plugin for WooCommerce","id":"CVE-2023-4040"},"packages":[{"ecosystem":"SUSE:Enterprise Storage 7","fixed":["12.3.0+git1204-150000.1.16.1"],"introduced":["0"],"last_affected":[],"package":"cross-nvptx-gcc12","purl":"pkg:rpm/suse/cross-nvptx-gcc12\u0026distro=SUSE%20Enterprise%20Storage%207","source":"SUSE-SU-2023:3661-1"},{"ecosystem":"SUSE:Enterprise Storage 7","fixed":["12.3.0+git1204-150000.1.16.1"],"introduced":["0"],"last_affected":[],"package":"gcc12","purl":"pkg:rpm/suse/gcc12\u0026distro=SUSE%20Enterprise%20Storage%207","source":"SUSE-SU-2023:3661-1"},{"ecosystem":"SUSE:Enterprise Storage 7.1","fixed":["13.2.1+git7813-150000.1.6.1"],"introduced":["0"],"last_affected":[],"package":"cross-nvptx-gcc13","purl":"pkg:rpm/suse/cross-nvptx-gcc13\u0026distro=SUSE%20Enterprise%20Storage%207.1","source":"SUSE-SU-2023:4458-1"},{"ecosystem":"SUSE:Enterprise Storage 7.1","fixed":["13.2.1+git7813-150000.1.6.1"],"introduced":["0"],"last_affected":[],"package":"gcc13","purl":"pkg:rpm/suse/gcc13\u0026distro=SUSE%20Enterprise%20Storage%207.1","source":"SUSE-SU-2023:4458-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","fixed":["12.3.0+git1204-150000.1.16.1"],"introduced":["0"],"last_affected":[],"package":"cross-nvptx-gcc12","purl":"pkg:rpm/suse/cross-nvptx-gcc12\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS","source":"SUSE-SU-2023:3661-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","fixed":["13.2.1+git7813-150000.1.6.1"],"introduced":["0"],"last_affected":[],"package":"cross-nvptx-gcc13","purl":"pkg:rpm/suse/cross-nvptx-gcc13\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS","source":"SUSE-SU-2023:4458-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","fixed":["12.3.0+git1204-150000.1.16.1"],"introduced":["0"],"last_affected":[],"package":"gcc12","purl":"pkg:rpm/suse/gcc12\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS","source":"SUSE-SU-2023:3661-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance 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Computing 15 SP3-ESPOS","fixed":["12.3.0+git1204-150000.1.16.1"],"introduced":["0"],"last_affected":[],"package":"cross-nvptx-gcc12","purl":"pkg:rpm/suse/cross-nvptx-gcc12\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOS","source":"SUSE-SU-2023:3661-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS","fixed":["13.2.1+git7813-150000.1.6.1"],"introduced":["0"],"last_affected":[],"package":"cross-nvptx-gcc13","purl":"pkg:rpm/suse/cross-nvptx-gcc13\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOS","source":"SUSE-SU-2023:4458-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS","fixed":["12.3.0+git1204-150000.1.16.1"],"introduced":["0"],"last_affected":[],"package":"gcc12","purl":"pkg:rpm/suse/gcc12\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOS","source":"SUSE-SU-2023:3661-1"},{"ecosystem":"SUSE:Linux Enterprise High 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n/a","id":"CVE-2018-12886","kev_date_added":null,"published":"2019-05-22"},{"cvss_score":7.8,"headline":"Integer overflow in the new[] operator in gcc before 4.8.0 allows attackers to have unspecified impacts.","id":"CVE-2002-2439","kev_date_added":null,"published":"2019-10-23"},{"cvss_score":7.5,"headline":"Weak cryptography in n/a","id":"CVE-2019-15847","kev_date_added":null,"published":"2019-09-02"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2008-1367","kev_date_added":null,"published":"2008-03-17"},{"cvss_score":6.8,"headline":"Integer overflow in n/a","id":"CVE-2008-1685","kev_date_added":null,"published":"2008-04-06"},{"cvss_score":5.5,"headline":"Denial of service in n/a","id":"CVE-2021-46195","kev_date_added":null,"published":"2022-01-14"},{"cvss_score":5,"headline":"Weak cryptography in n/a","id":"CVE-2015-5276","kev_date_added":null,"published":"2015-11-17"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["Arm Ltd","GNU"]},"summary":"GCC's stack protector fails to detect overflows in dynamically-sized local variables on AArch64, allowing attackers to bypass security checks and potentially execute code.","url":"https://insights.sbomify.com/CVE-2023-4039/"}