{"id":"CVE-2025-62518","state":"PUBLISHED","title":"astral-tokio-tar Vulnerable to PAX Header Desynchronization","description":"astral-tokio-tar is a tar archive reading/writing library for async Rust. Versions of astral-tokio-tar prior to 0.5.6 contain a boundary parsing vulnerability that allows attackers to smuggle additional archive entries by exploiting inconsistent PAX/ustar header handling. When processing archives with PAX-extended headers containing size overrides, the parser incorrectly advances stream position based on ustar header size (often zero) instead of the PAX-specified size, causing it to interpret file content as legitimate tar headers. This issue has been patched in version 0.5.6. There are no workarounds.","publishedAt":"2025-10-21T16:13:02.646Z","updatedAt":"2025-10-22T13:23:33.408Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["astral-sh tokio-tar"],"affected":[{"vendor":"astral-sh","product":"tokio-tar","versions":[{"version":"< 0.5.6","status":"affected"}]}],"references":["https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx","https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9","https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318","https://edera.dev/stories/tarmageddon","https://github.com/edera-dev/cve-tarmageddon"],"weaknesses":["CWE-843"],"ingestedAt":"2026-10-29T20:09:48.677Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/62xxx/CVE-2025-62518.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-62518","state":"PUBLISHED","datePublished":"2025-10-21T16:13:02.646Z","dateUpdated":"2025-10-22T13:23:33.408Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-10-15T15:03:28.134Z"},"containers":{"cna":{"title":"astral-tokio-tar Vulnerable to PAX Header Desynchronization","descriptions":[{"lang":"en","value":"astral-tokio-tar is a tar archive reading/writing library for async Rust. Versions of astral-tokio-tar prior to 0.5.6 contain a boundary parsing vulnerability that allows attackers to smuggle additional archive entries by exploiting inconsistent PAX/ustar header handling. When processing archives with PAX-extended headers containing size overrides, the parser incorrectly advances stream position based on ustar header size (often zero) instead of the PAX-specified size, causing it to interpret file content as legitimate tar headers. This issue has been patched in version 0.5.6. There are no workarounds."}],"affected":[{"vendor":"astral-sh","product":"tokio-tar","versions":[{"version":"< 0.5.6","status":"affected"}]}],"references":[{"url":"https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx","name":"https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9","name":"https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9","tags":["x_refsource_MISC"]},{"url":"https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318","name":"https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318","tags":["x_refsource_MISC"]},{"url":"https://edera.dev/stories/tarmageddon","name":"https://edera.dev/stories/tarmageddon","tags":["x_refsource_MISC"]},{"url":"https://github.com/edera-dev/cve-tarmageddon","name":"https://github.com/edera-dev/cve-tarmageddon","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-843","lang":"en","description":"CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-10-21T16:13:02.646Z"},"source":{"advisory":"GHSA-j5gw-2vrg-8fgx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-22T13:18:16.414919Z","id":"CVE-2025-62518","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-22T13:23:33.408Z"}}]}}}