{"id":"GHSA-mm6g-mmq6-53ff","summary":"Path Traversal in SharpZipLib","details":"SharpZipLib (or #ziplib) is a Zip, GZip, Tar and BZip2 library. Starting version 1.0.0 and prior to version 1.3.3, a check was added if the destination file is under a destination directory. However, it is not enforced that `_baseDirectory` ends with slash. If the _baseDirectory is not slash terminated like `/home/user/dir` it is possible to create a file with a name thats begins as the destination directory one level up from the directory, i.e. `/home/user/dir.sh`. Because of the file name and destination directory constraints, the arbitrary file creation impact is limited and depends on the use case. Version 1.3.3 fixed this vulnerability.","aliases":["CVE-2021-32842"],"modified":"2024-02-19T05:31:55.120019Z","published":"2022-02-01T16:23:00Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2022-02-01T16:22:12Z","nvd_published_at":"2022-01-26T21:15:00Z","cwe_ids":["CWE-22"]},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32842"},{"type":"PACKAGE","url":"https://github.com/icsharpcode/SharpZipLib"},{"type":"WEB","url":"https://github.com/icsharpcode/SharpZipLib/releases/tag/v1.3.3"},{"type":"ADVISORY","url":"https://securitylab.github.com/advisories/GHSL-2021-125-sharpziplib"}],"affected":[{"package":{"name":"SharpZipLib","ecosystem":"NuGet","purl":"pkg:nuget/SharpZipLib"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.3.3"}]}],"versions":["1.0.0","1.1.0","1.2.0","1.3.0","1.3.1","1.3.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/02/GHSA-mm6g-mmq6-53ff/GHSA-mm6g-mmq6-53ff.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}