LibRaw identify() Function Divide By Zero Vulnerability [CVE-2018-5804]

CVE Number – CVE-2018-5804

A vulnerability in the identify() function of LibRaw could allow a local attacker to cause a denial of service (DoS) condition on a targeted system.The vulnerability is due to a type confusion error in the identify() function, as defined in the internal/dcraw_common.cpp source code file of the affected software. An attacker could exploit this vulnerability by submitting a malicious file to the targeted system. A successful exploit could cause the affected software to crash, resulting in a DoS condition.Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available.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 could 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

  • LibRaw has released software updates at the following link: LibRaw 0.18.8

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.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: