CUPS is a standards-based, open-source printing system, and cups-browsed
contains network printing functionality including, but not limited to, auto-discovering print services and shared printers. cups-browsed
binds to INADDR_ANY:631
, causing it to trust any packet from any source, and can cause the Get-Printer-Attributes
IPP request to an attacker controlled URL. Due to the service binding to *:631 ( INADDR_ANY )
, multiple bugs in cups-browsed
can be exploited in sequence to introduce a malicious printer to the system. This chain of exploits ultimately enables an attacker to execute arbitrary commands remotely on the target machine without authentication when a print job is started. This poses a significant security risk over the network. Notably, this vulnerability is particularly concerning as it can be exploited from the public internet, potentially exposing a vast number of systems to remote attacks if their CUPS services are enabled.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "cups-browsed" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "cups-browsed-dbgsym" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "cups-filters" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "cups-filters-core-drivers" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "cups-filters-core-drivers-dbgsym" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "cups-filters-dbgsym" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "libcupsfilters-dev" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "libcupsfilters1" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "libcupsfilters1-dbgsym" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "libfontembed-dev" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "libfontembed1" }, { "binary_version": "1.20.2-0ubuntu3.3+esm1", "binary_name": "libfontembed1-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "cups-browsed" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "cups-browsed-dbgsym" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "cups-filters" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "cups-filters-core-drivers" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "cups-filters-core-drivers-dbgsym" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "cups-filters-dbgsym" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "libcupsfilters-dev" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "libcupsfilters1" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "libcupsfilters1-dbgsym" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "libfontembed-dev" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "libfontembed1" }, { "binary_version": "1.27.4-1ubuntu0.3", "binary_name": "libfontembed1-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "cups-browsed" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "cups-browsed-dbgsym" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "cups-filters" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "cups-filters-core-drivers" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "cups-filters-core-drivers-dbgsym" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "cups-filters-dbgsym" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "libcupsfilters-dev" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "libcupsfilters1" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "libcupsfilters1-dbgsym" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "libfontembed-dev" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "libfontembed1" }, { "binary_version": "1.28.15-0ubuntu1.3", "binary_name": "libfontembed1-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2.0.0-0ubuntu10.1", "binary_name": "cups-browsed" }, { "binary_version": "2.0.0-0ubuntu10.1", "binary_name": "cups-browsed-dbgsym" }, { "binary_version": "2.0.0-0ubuntu10.1", "binary_name": "cups-browsed-tests" } ] }