{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-27787 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-27787 is a medium-severity denial of service vulnerability in upx, published on 18 Aug 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-27787 and fix it if it is affected.\n\nWhat it is: CVE-2020-27787 is a medium-severity denial of service vulnerability in upx, published on 18 Aug 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2020-27787 in the wild and no public exploit code.\n\nAffected product: upx. 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-2020-27787/ (Markdown: https://insights.sbomify.com/CVE-2020-27787/index.md)","id":"CVE-2020-27787","markdown":"https://insights.sbomify.com/CVE-2020-27787/index.md","name":"CVE-2020-27787","record":{"aliases":["DEBIAN-CVE-2020-27787","GHSA-4rhf-85wr-9pxc","UBUNTU-CVE-2020-27787"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"UPX executable packer","requires_auth":"none","summary":"An attacker can cause a denial of service in UPX by providing a crafted input file that triggers a segmentation fault.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"upx","vendor":"upx"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Denial of service in upx","id":"CVE-2020-27787","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Denial of service in upx","id":"CVE-2020-27788"},"packages":[],"prev":{"headline":"Use after free in kernel","id":"CVE-2020-27786"},"products":["upx"],"published":"2022-08-18","related":[{"cvss_score":7.8,"headline":"Memory corruption in upx","id":"CVE-2020-27796","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":7.8,"headline":"Memory corruption in upx","id":"CVE-2020-27799","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":7.8,"headline":"Memory corruption in upx","id":"CVE-2020-27800","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":7.8,"headline":"Memory corruption in upx","id":"CVE-2020-27801","kev_date_added":null,"published":"2022-08-25"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2019-14296","kev_date_added":null,"published":"2019-07-27"},{"cvss_score":7.8,"headline":"Use after free in n/a","id":"CVE-2018-11243","kev_date_added":null,"published":"2018-05-18"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2017-16869","kev_date_added":null,"published":"2017-11-17"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"An attacker can cause a denial of service in UPX by providing a crafted input file that triggers a segmentation fault.","url":"https://insights.sbomify.com/CVE-2020-27787/"}