{"id":"GHSA-mj63-64x7-57xf","summary":"Path traversal in impacket","details":"Multiple path traversal vulnerabilities exist in smbserver.py in Impacket before 0.9.23. An attacker that connects to a running smbserver instance can list and write to arbitrary files via ../ directory traversal. This could potentially be abused to achieve arbitrary code execution by replacing /etc/shadow or an SSH authorized key.","aliases":["CVE-2021-31800","PYSEC-2021-17"],"modified":"2025-02-13T05:31:13.158552Z","published":"2021-06-18T18:43:14Z","database_specific":{"nvd_published_at":"2021-05-05T11:15:00Z","cwe_ids":["CWE-22"],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2021-05-19T20:42:46Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31800"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/commit/49c643bf66620646884ed141c94e5fdd85bcdd2f"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/commit/99bd29e3995c254e2d6f6c2e3454e4271665955a"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/blob/cb6d43a677c338db930bc4e9161620832c1ec624/impacket/smbserver.py#L2008"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/blob/cb6d43a677c338db930bc4e9161620832c1ec624/impacket/smbserver.py#L2958"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/blob/cb6d43a677c338db930bc4e9161620832c1ec624/impacket/smbserver.py#L3485"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/blob/cb6d43a677c338db930bc4e9161620832c1ec624/impacket/smbserver.py#L876"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/releases"},{"type":"WEB","url":"https://github.com/SecureAuthCorp/impacket/releases/tag/impacket_0_9_23"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-mj63-64x7-57xf"},{"type":"PACKAGE","url":"https://github.com/fortra/impacket"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/impacket/PYSEC-2021-17.yaml"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPXDPWCAPVX3UWYZ3N2T5OLBSBBUHJP6"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KRV2C5DATXBHG6TF6CEEX54KZ75THQS3"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UF56LYB27LHEIFJTFHU3M75NMNNK2SCG"}],"affected":[{"package":{"name":"impacket","ecosystem":"PyPI","purl":"pkg:pypi/impacket"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.23"}]}],"versions":["0.9.10","0.9.11","0.9.12","0.9.13","0.9.14","0.9.15","0.9.17","0.9.18","0.9.19","0.9.20","0.9.21","0.9.22"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/06/GHSA-mj63-64x7-57xf/GHSA-mj63-64x7-57xf.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}