{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2023-4949 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-4949 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-4949 is a high-severity memory corruption vulnerability in Xen Xen, published on 10 Nov 2023. 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-2023-4949 and fix it if it is affected.\n\nWhat it is: CVE-2023-4949 is a high-severity memory corruption vulnerability in Xen Xen, published on 10 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-4949 in the wild and no public exploit code.\n\nAffected product: Xen Xen. 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-2023-4949/ (Markdown: https://insights.sbomify.com/CVE-2023-4949/index.md)","id":"CVE-2023-4949","markdown":"https://insights.sbomify.com/CVE-2023-4949/index.md","name":"CVE-2023-4949","record":{"aliases":["DEBIAN-CVE-2023-4949"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Bootloader","requires_auth":"high_privilege","summary":"A local attacker can exploit memory corruption in Grub-Legacy's XFS implementation via a modified partition to execute code or escalate privileges.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Google","cpe":[{"product":"grub","vendor":"gnu"},{"product":"xen","vendor":"xen"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"},{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Memory Corruption Vulnerability in Grub-Legacy's XFS Implementation","id":"CVE-2023-4949","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"xen:xen","products":["xen:xen"],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Funnelforms Free \u003c 3.4 Unauthenticated Stored Cross-Site Scripting","id":"CVE-2023-4950"},"packages":[],"prev":{"headline":"WooCommerce CVR Payment Gateway \u003c 6.1.0 - Missing Authorization to Authenticated (Contributor+) CVR Update","id":"CVE-2023-4948"},"products":["Grub-Legacy"],"published":"2023-11-10","related":[{"cvss_score":2.1,"headline":"Information disclosure in n/a","id":"CVE-2013-4577","kev_date_added":null,"published":"2014-05-12"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-09-03","vendors":["Free Software Foundation"]},"summary":"A local attacker can exploit memory corruption in Grub-Legacy's XFS implementation via a modified partition to execute code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2023-4949/"}