rustsec-2026-0112
Vulnerability from osv_rustsec
Published
2026-04-27 12:00
Modified
2026-04-28 13:17
Summary
PAX Header Desynchronization in astral-tokio-tar
Details

Versions of astral-tokio-tar prior to 0.6.1 contain a PAX header interpretation bug that allows manipulated entries to be made selectively visible or invisible during extraction with astral-tokio-tar versus other tar implementations. An attacker could use this differential to smuggle unexpected files onto a victim's filesystem.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "format-injection"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "astral-tokio-tar",
        "purl": "pkg:cargo/astral-tokio-tar"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.6.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-fp55-jw48-c537"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Versions of astral-tokio-tar prior to 0.6.1 contain a PAX header interpretation\nbug that allows manipulated entries to be made selectively visible or invisible\nduring extraction with astral-tokio-tar versus other tar implementations.\nAn attacker could use this differential to smuggle unexpected files onto a\nvictim\u0027s filesystem.",
  "id": "RUSTSEC-2026-0112",
  "modified": "2026-04-28T13:17:23Z",
  "published": "2026-04-27T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/astral-tokio-tar"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0112.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-fp55-jw48-c537"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "PAX Header Desynchronization in astral-tokio-tar"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.