socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_name": "screen", "binary_version": "4.1.0~20120320gitdb59704-9ubuntu0.1~esm3" }, { "binary_name": "screen-dbg", "binary_version": "4.1.0~20120320gitdb59704-9ubuntu0.1~esm3" }, { "binary_name": "screen-dbgsym", "binary_version": "4.1.0~20120320gitdb59704-9ubuntu0.1~esm3" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_name": "screen", "binary_version": "4.3.1-2ubuntu0.1+esm1" }, { "binary_name": "screen-dbg", "binary_version": "4.3.1-2ubuntu0.1+esm1" }, { "binary_name": "screen-dbgsym", "binary_version": "4.3.1-2ubuntu0.1+esm1" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_name": "screen", "binary_version": "4.6.2-1ubuntu1.1+esm1" }, { "binary_name": "screen-dbgsym", "binary_version": "4.6.2-1ubuntu1.1+esm1" }, { "binary_name": "screen-udeb", "binary_version": "4.6.2-1ubuntu1.1+esm1" } ] }