{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2011-0421 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2011-0421 is a medium-severity vulnerability in Php Php, published on 20 Mar 2011. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2011-0421 and fix it if it is affected.\n\nWhat it is: CVE-2011-0421 is a medium-severity vulnerability in Php Php, published on 20 Mar 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2011-0421 in the wild and no public exploit code.\n\nAffected product: Php Php. 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-2011-0421/ (Markdown: https://insights.sbomify.com/CVE-2011-0421/index.md)","id":"CVE-2011-0421","markdown":"https://insights.sbomify.com/CVE-2011-0421/index.md","name":"CVE-2011-0421","record":{"aliases":["DEBIAN-CVE-2011-0421","GHSA-h3v6-hj58-cx74"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP Zip extension","requires_auth":"none","summary":"Attackers can cause a denial of service via NULL pointer dereference in PHP's Zip extension by processing empty ZIP archives.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"certcc","cpe":[{"product":"php","vendor":"php"}],"cvss":{"score":4.3,"severity":"medium","source":"nvd","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","version":"2.0"},"cwes":[],"description":"The _zip_name_locate function in zip_name_locate.c in the Zip extension in PHP before 5.3.6 does not properly handle a ZIPARCHIVE::FL_UNCHANGED argument, which might allow context-dependent attackers to cause a denial of service (NULL pointer dereference) via an empty ZIP archive that is processed with a (1) locateName or (2) statName operation.","ecosystems":[],"exploits":{"exploitdb":1,"first_seen":"2011-03-18","github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[{"date":"2011-03-18","kind":"exploitdb","ref":"17004","stars":null,"title":"PHP 5.3.5 libzip 0.9.3 - _zip_name_locate Null Pointer Dereference"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Null dereference in n/a","id":"CVE-2011-0421","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"php:php","products":["php:php"],"type":"null_dereference","year":"2011"},"n_packages":0,"n_references":28,"next":{"headline":"Hardcoded credentials in n/a","id":"CVE-2011-0423"},"packages":[],"prev":{"headline":"Null dereference in n/a","id":"CVE-2011-0420"},"products":["n/a"],"published":"2011-03-20","related":[{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2012-2688","kev_date_added":null,"published":"2012-07-20"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2012-2376","kev_date_added":null,"published":"2012-05-21"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2011-3268","kev_date_added":null,"published":"2011-08-25"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2009-4143","kev_date_added":null,"published":"2009-12-21"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2008-5557","kev_date_added":null,"published":"2008-12-23"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2008-2050","kev_date_added":null,"published":"2008-05-05"},{"cvss_score":10,"headline":"Command injection in n/a","id":"CVE-2008-2051","kev_date_added":null,"published":"2008-05-05"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-06","vendors":["n/a"]},"summary":"Attackers can cause a denial of service via NULL pointer dereference in PHP's Zip extension by processing empty ZIP archives.","url":"https://insights.sbomify.com/CVE-2011-0421/"}