Arch Linux Security Advisory ASA-202110-9 ========================================= Severity: Medium Date : 2021-10-29 CVE-ID : CVE-2021-30846 CVE-2021-30851 CVE-2021-42762 Package : webkit2gtk Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-2483 Summary ======= The package webkit2gtk before version 2.34.1-1 is vulnerable to multiple issues including arbitrary code execution and sandbox escape. Resolution ========== Upgrade to 2.34.1-1. # pacman -Syu "webkit2gtk>=2.34.1-1" The problems have been fixed upstream in version 2.34.1. Workaround ========== None. Description =========== - CVE-2021-30846 (arbitrary code execution) A security issue has been found in WebKitGTK and WPE WebKit before 2.34.0. Processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2021-30851 (arbitrary code execution) A security issue has been found in WebKitGTK and WPE WebKit before 2.34.0. Processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2021-42762 (sandbox escape) BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypass that allows a sandboxed process to trick host processes into thinking the sandboxed process is not confined by the sandbox, by abusing VFS syscalls that manipulate its filesystem namespace. The impact is limited to host services that create UNIX sockets that WebKit mounts inside its sandbox, and the sandboxed process remains otherwise confined. NOTE: this is similar to CVE-2021-41133. Impact ====== A remote attacker could execute arbitrary code or escape the confinements of the security sandbox through crafted web content. References ========== https://webkitgtk.org/security/WSA-2021-0006.html#CVE-2021-30846 https://webkitgtk.org/security/WSA-2021-0006.html#CVE-2021-30851 https://webkitgtk.org/security/WSA-2021-0006.html#CVE-2021-42762 https://bugs.webkit.org/show_bug.cgi?id=231479 https://trac.webkit.org/changeset/284451/webkit https://security.archlinux.org/CVE-2021-30846 https://security.archlinux.org/CVE-2021-30851 https://security.archlinux.org/CVE-2021-42762