David Drysdale

The issue is related to the XPC Services API in LaunchServices, which has inadequate access control. This allows an attacker to bypass event-handler restrictions and modify events of arbitrary apps using a crafted app. The estimated number of potentially affected devices is not specified. There is no information about real-world incidents where this issue was exploited.

The issue is related to the `xmlStringLenDecodeEntities` function in `parser.c` of the libxml2 library, which is associated with resource management errors. Exploitation of this issue may allow a remote attacker to cause a denial of service (CPU consumption) using specially crafted XML data. This can be achieved by context-dependent attackers via crafted XML data, allowing them to consume CPU resources.

The issue is related to insufficient restriction of XML links to external objects in the libxml2 library's XML file parser. This can be exploited by a remote attacker using a specially crafted XML document to cause a denial of service, specifically memory consumption, through an XML Entity Expansion (XEE) attack.