Linux Kernel cdrom_ioctl_select_disc Information Disclosure Vulnerability [CVE-2018-18710]

CVE Number –  CVE-2018-18710

A vulnerability in the cdrom_ioctl_select_disc function of the Linux Kernel could allow a local attacker to access sensitive information on a targeted system.

The vulnerability exists in the cdrom_ioctl_select_disc function, as defined in the drivers/cdrom/cdrom.c source code file of the affected software, and is due to insufficient bounds checking when the software processes user-supplied input. An attacker could exploit the vulnerability by accessing the system and executing an application that submits malicious input to the affected software. A successful exploit could allow the attacker to read arbitrary kernel memory on the system, which could be used to conduct additional attacks.

Kernel.org has confirmed the vulnerability and released software updates.

Analysis
  • To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement may reduce the likelihood of a successful exploit.
Safeguards
  • Administrators are advised to apply the appropriate updates.

    Administrators are advised to allow only trusted users to access local systems.

    Administrators are advised to allow only privileged users to access administration or management systems.

    Administrators are advised to monitor critical systems.

Vendor Announcements
Fixed Software
  • Kernel.org has released software updates at the following link: cdrom: patc




Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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