USN-7199-1

It was discovered that Expat, contained within the xmltok library, incorrectly handled malformed XML data. If a user or application were tricked into opening a crafted XML file, an attacker could cause a denial of service, or possibly execute arbitrary code. (CVE-2015-1283, CVE-2016-0718, CVE-2016-4472, CVE-2019-15903)

It was discovered that Expat, contained within the xmltok library, incorrectly handled XML data containing a large number of colons, which could lead to excessive resource consumption. If a user or application were tricked into opening a crafted XML file, an attacker could possibly use this issue to cause a denial of service. (CVE-2018-20843)

It was discovered that Expat, contained within the xmltok library, incorrectly handled certain input, which could lead to an integer overflow. If a user or application were tricked into opening a crafted XML file, an attacker could possibly use this issue to cause a denial of service. (CVE-2021-46143, CVE-2022-22822, CVE-2022-22823, CVE-2022-22824, CVE-2022-22825, CVE-2022-22826, CVE-2022-22827)