node-tar vulnerable to race condition leading to uninitialized memory exposure

6.1 / 10

MEDIUM

CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H

Description

node-tar is a Tar for Node.js. In 7.5.1, using .t (aka .list) with { sync: true } to read tar entry contents returns uninitialized memory contents if tar file was changed on disk to a smaller size while being read. This vulnerability is fixed in 7.5.2.

Basic Information

ID CVE-2025-64118

Source GitHub_M

Published Oct 30, 2025 at 17:50

Modified Oct 30, 2025 at 18:42

Affected Product

Vendor isaacs

Product node-tar

Version = 7.5.1

Affected Versions isaacs node-tar = 7.5.1

CWE Classification

CWE-362 CWE-367

References

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    "lastseen": "",
    "description": "node-tar is a Tar for Node.js. In 7.5.1, using .t (aka .list) with { sync: true } to read tar entry contents returns uninitialized memory contents if tar file was changed on disk to a smaller size while being read. This vulnerability is fixed in 7.5.2.",
    "published": "2025-10-30T17:50:20.421Z",
    "modified": "2025-10-30T18:42:19.663Z",
    "type": "cve",
    "title": "node-tar vulnerable to race condition leading to uninitialized memory exposure",
    "source": "GitHub_M",
    "references": "https://github.com/isaacs/node-tar/security/advisories/GHSA-29xp-372q-xqph\nhttps://github.com/isaacs/node-tar/issues/445\nhttps://github.com/isaacs/node-tar/pull/446\nhttps://github.com/isaacs/node-tar/commit/5330eb04bc43014f216e5c271b40d5c00d45224d",
    "id": "CVE-2025-64118",
    "bulletinFamily": "",
    "cwe": [
        "CWE-362",
        "CWE-367"
    ],
    "cvelist": null,
    "sourceData": "isaacs node-tar = 7.5.1",
    "sourceHref": "",
    "cvss": {
        "score": 6.1,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:H",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseScore": 0,
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "node-tar",
    "version": "= 7.5.1",
    "vendor": "isaacs",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}

node-tar vulnerable to race condition leading to uninitialized memory exposure_CVE-2025-64118