A file security update has been released for Arch Linux

Arch Linux Security Advisory ASA-202001-2
=========================================

Severity: High
Date : 2020-01-09
CVE-ID : CVE-2019-18218
Package : file
Type : arbitrary code execution
Remote : No
Link :   https://security.archlinux.org/AVG-1083

Summary
=======

The package file before version 5.38-1 is vulnerable to arbitrary code
execution.

Resolution
==========

Upgrade to 5.38-1.

# pacman -Syu "file>=5.38-1"

The problem has been fixed upstream in version 5.38.

Workaround
==========

None.

Description
===========

cdf_read_property_info in cdf.c in file through 5.37 does not restrict
the number of CDF_VECTOR elements, which allows a heap-based buffer
overflow (4-byte out-of-bounds write).

Impact
======

An attacker is able to execute arbitrary code on the affected host by
tricking a user to process a specially crafted file via libmagic or
file.

References
==========

  https://bugs.archlinux.org/task/64430
  https://github.com/file/file/commit/46a8443f76cec4b41ec736eca396984c74664f84

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16780
  https://security.archlinux.org/CVE-2019-18218