{"answers":{"affected":"2 open source packages ship an affected version, including pear/archive_tar. It affects 3 products.","exploited":"There is no known exploitation of CVE-2018-1000888 in the wild and no public exploit code.","fix":"Upgrade pear/archive_tar to 1.4.4 or later.","what":"CVE-2018-1000888 is a high-severity unsafe deserialization vulnerability in Canonical Ubuntu Linux, published on 27 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2018-1000888 and fix it if it is affected.\n\nWhat it is: CVE-2018-1000888 is a high-severity unsafe deserialization vulnerability in Canonical Ubuntu Linux, published on 27 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2018-1000888 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pear/archive_tar (Packagist): affected all versions; fixed in 1.4.4\n- pear/archive_tar (Packagist): affected all versions; fixed in 1.4.4\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-2018-1000888/ (Markdown: https://insights.sbomify.com/CVE-2018-1000888/index.md)","id":"CVE-2018-1000888","markdown":"https://insights.sbomify.com/CVE-2018-1000888/index.md","name":"CVE-2018-1000888","record":{"aliases":["CLEANSTART-2024-AG03928","DEBIAN-CVE-2018-1000888","DLA-1674-1","DSA-4378-1","GHSA-3q76-jq6m-573p","UBUNTU-CVE-2018-1000888","USN-3857-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP Archive_Tar library","requires_auth":"none","summary":"Attackers can achieve remote code execution or arbitrary file deletion via PHP object injection in the Archive_Tar library.","user_interaction":"required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"pear_archive_tar","vendor":"php"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"PEAR Archive_Tar version 1.4.3 and earlier contains a CWE-502, CWE-915 vulnerability in the Archive_Tar class. There are several file operations with `$v_header['filename']` as parameter (such as file_exists, is_file, is_dir, etc). When extract is called without a specific prefix path, we can trigger unserialization by crafting a tar file with `phar://[path_to_malicious_phar_file]` as path. Object injection can be used to trigger destruct in the loaded PHP classes, e.g. the Archive_Tar class itself. With Archive_Tar object injection, arbitrary file deletion can occur because `@unlink($this-\u003e_temp_tarname)` is called. If another class with useful gadget is loaded, it may possible to cause remote code execution that can result in files being deleted or possibly modified. This vulnerability appears to have been fixed in 1.4.4.","ecosystems":["Packagist"],"exploits":{"exploitdb":1,"first_seen":"2019-01-10","github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[{"date":"2019-01-10","kind":"exploitdb","ref":"46108","stars":null,"title":"PEAR Archive_Tar \u003c 1.4.4 - PHP Object Injection"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Archive_Tar contains Potential RCE if filename starts with phar://","id":"CVE-2018-1000888","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux"],"type":"deserialization","year":"2018"},"n_packages":2,"n_references":9,"next":{"headline":"XML external entity in n/a","id":"CVE-2018-1000889"},"packages":[{"ecosystem":"Packagist","fixed":["1.4.4"],"introduced":["0"],"last_affected":[],"package":"pear/archive_tar","purl":null,"source":"GHSA-3q76-jq6m-573p"},{"ecosystem":"Packagist","fixed":["1.4.4"],"introduced":["0"],"last_affected":[],"package":"pear/archive_tar","purl":"pkg:composer/pear/archive_tar","source":"GHSA-3q76-jq6m-573p"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-1000887"},"products":["n/a"],"published":"2018-12-27","related":[{"cvss_score":9.8,"headline":"SaltStack Salt Authentication Bypass","id":"CVE-2020-11651","kev_date_added":"2021-11-03","published":"2020-04-30"},{"cvss_score":9.8,"headline":"OpenSMTPD Remote Code Execution","id":"CVE-2020-7247","kev_date_added":"2022-03-25","published":"2020-01-29"},{"cvss_score":9.8,"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928","kev_date_added":"2022-03-03","published":"2019-09-27"},{"cvss_score":9.8,"headline":"Exim Buffer Overflow","id":"CVE-2018-6789","kev_date_added":"2021-11-03","published":"2018-02-08"},{"cvss_score":9.8,"headline":"Oracle Java SE and Java SE Embedded Remote Code Execution","id":"CVE-2015-2590","kev_date_added":"2022-03-03","published":"2015-07-16"},{"cvss_score":9.8,"headline":"Oracle JRE Remote Code Execution","id":"CVE-2013-0422","kev_date_added":"2022-05-25","published":"2013-01-10"},{"cvss_score":9.8,"headline":"Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution","id":"CVE-2011-3544","kev_date_added":"2022-03-03","published":"2011-10-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Attackers can achieve remote code execution or arbitrary file deletion via PHP object injection in the Archive_Tar library.","url":"https://insights.sbomify.com/CVE-2018-1000888/"}