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{"acknowledgement": "Red Hat would like to thank Demi M. Obenour for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:4489", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "rpm-0:4.14.3-19.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}, {"advisory": "RHSA-2021:4489", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "rpm-0:4.14.3-19.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}], "bugzilla": {"description": "rpm: missing length checks in hdrblobInit()", "id": "1927741", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1927741"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-125", "details": ["A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability.", "A flaw was found in RPM\u2019s hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability."], "mitigation": {"lang": "en:us", "value": "If using the headerCheck() and headerImport() APIs in your software, do not run them on headers from untrusted sources."}, "name": "CVE-2021-20266", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-03-11T22:49:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-20266\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-20266"], "statement": "In order to exploit this flaw with rpm tooling as shipped in Red Hat Enterprise Linux, an attacker would need to already have root access to modify the rpm database.", "threat_severity": "Low", "upstream_fix": "rpm 4.17.0"}