SB2019120910 - Denial of service in YARA

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Main Vulnerability Database SB2019120910

SB2019120910 - Denial of service in YARA

Published: December 9, 2019 Updated: January 26, 2021

Security Bulletin ID SB2019120910
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2019-19648)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the "macho_parse_file" functionality in "macho/macho.c" file when "command_size" may be inconsistent with the real size. A remote attacker can send a specially crafted MachO file, trigger out-of-bounds read error and cause a denial of service condition on the target system.


Remediation

Install update from vendor's website.

References