Ubuntu Security Notice USN-6590-1

Ubuntu Security Notice 6590-1 - It was discovered that Xerces-C++ was not properly handling memory management operations when parsing XML data containing external DTDs, which could trigger a use-after-free error. If a user or automated system were tricked into processing a specially crafted XML document, an attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS. It was discovered that Xerces-C++ was not properly performing bounds checks when processing XML Schema Definition files, which could lead to an out-of-bounds access via an HTTP request. If a user or automated system were tricked into processing a specially crafted XSD file, a remote attacker could possibly use this issue to cause a denial of service.