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{"bugzilla": {"description": "yarn: TOCTOU vulnerability leads to cache pollution", "id": "1851875", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1851875"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-367", "details": ["The package integrity validation in yarn < 1.19.0 contains a TOCTOU vulnerability where the hash is computed before writing a package to cache. It's not computed again when reading from the cache. This may lead to a cache pollution attack.", "A flaw was found in Yarn. The package integrity validation in Yarn contains a time-of-check to time-of-use (TOCTOU) vulnerability where the hash is computed before writing a package to cache and is not computed again when reading from the cache. This flaw may lead to a cache pollution attack. The highest threat from this vulnerability is to integrity."], "mitigation": {"lang": "en:us", "value": "Run 'yarn cache clean' before installs."}, "name": "CVE-2019-15608", "package_state": [{"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Not affected", "package_name": "yarn", "product_name": "Red Hat Quay 3"}], "public_date": "2020-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-15608\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-15608"], "threat_severity": "Moderate", "upstream_fix": "yarn 1.19.0"}