GLSA 202310-14: libinput: format string vulnerability when using xf86-input-libinput
| Severity: | high |
| Title: | libinput: format string vulnerability when using xf86-input-libinput |
| Date: | 10/26/2023 |
| Bugs: | |
| ID: | 202310-14 |
Synopsis
A vulnerability has been discovered in libinput where an attacker may run malicous code by exploiting a format string vulnerability.Background
A library to handle input devices in Wayland and, via xf86-input-libinput, in X.org.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| dev-libs/libinput | < 1.20.1 | >= 1.20.1 | All supported architectures |
Description
An attacker may be able to run malicious code by exploiting a format string vulnerability. Please review the CVE identifier referenced below for details.
Impact
When a device is detected by libinput, libinput logs several messages through log handlers set up by the callers. These log handlers usually eventually result in a printf call. Logging happens with the privileges of the caller, in the case of Xorg this may be root. The device name ends up as part of the format string and a kernel device with printf-style format string placeholders in the device name can enable an attacker to run malicious code. An exploit is possible through any device where the attacker controls the device name, e.g. /dev/uinput or Bluetooth devices.
Workaround
There is no known workaround at this time.
Resolution
All libinput users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libinput-1.20.1"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.