{"id":"GHSA-j44m-qm6p-hp7m","summary":"Arbitrary File Overwrite in tar","details":"Versions of `tar` prior to 4.4.2 for 4.x and 2.2.2 for 2.x are vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink will overwrite the system's file with the contents of the extracted file.\n\n\n## Recommendation\n\nFor tar 4.x, upgrade to version 4.4.2 or later.\nFor tar 2.x, upgrade to version 2.2.2 or later.","aliases":["CVE-2018-20834"],"modified":"2023-11-29T22:25:48Z","published":"2019-05-01T18:37:31Z","database_specific":{"cwe_ids":["CWE-59"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2019-05-01T18:35:41Z","nvd_published_at":null},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20834"},{"type":"WEB","url":"https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d"},{"type":"WEB","url":"https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8"},{"type":"WEB","url":"https://hackerone.com/reports/344595"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2019:1821"},{"type":"PACKAGE","url":"https://github.com/isaacs/node-tar"},{"type":"WEB","url":"https://github.com/npm/node-tar/commits/v2.2.2"},{"type":"WEB","url":"https://github.com/npm/node-tar/compare/58a8d43...a5f7779"}],"affected":[{"package":{"name":"tar","ecosystem":"npm","purl":"pkg:npm/tar"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"4.4.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/05/GHSA-j44m-qm6p-hp7m/GHSA-j44m-qm6p-hp7m.json"}},{"package":{"name":"tar","ecosystem":"npm","purl":"pkg:npm/tar"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.2.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/05/GHSA-j44m-qm6p-hp7m/GHSA-j44m-qm6p-hp7m.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}