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"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-838", "details": ["xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.", "A flaw was found in expat. Passing malformed 2- and 3-byte UTF-8 sequences (for example, from start tag names) to the XML processing application on top of expat can lead to arbitrary code execution. This issue is dependent on how invalid UTF-8 is handled inside the XML processor."], "mitigation": {"lang": "en:us", "value": "There is no known mitigation other than restricting applications using the expat library from processing untrusted XML content. Please update the affected packages as soon as possible."}, "name": "CVE-2022-25235", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "firefox:flatpak/firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "xmlrpc-c", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-02-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-25235\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-25235\nhttps://blog.hartwork.org/posts/expat-2-4-5-released/"], "statement": "This flaw affects applications that leverage expat to parse untrusted XML files. Applications that only parse trusted XML files or do not process XML files at all are not affected by this flaw.", "threat_severity": "Important", "upstream_fix": "expat 2.4.5"}