MGASA-2021-0400

Updated webkit2 packages fix security vulnerabilities:

A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a malicious webpage (CVE-2021-21775).

A use-after-free vulnerability exists in the way Webkit GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability (CVE-2021-21779).

Processing maliciously crafted web content may lead to arbitrary code execution (CVE-2021-30663, CVE-2021-30665, CVE-2021-30734, CVE-2021-30749, CVE-2021-30758, CVE-2021-30795, CVE-2021-30797, CVE-2021-30799).

Processing maliciously crafted web content may lead to universal cross site scripting (CVE-2021-30689, CVE-2021-30744).

A malicious website may be able to access restricted ports on arbitrary servers (CVE-2021-30720).