ArchLinux: 202001-2: file: arbitrary code execution
Summary
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).
Resolution
Upgrade to 5.38-1.
# pacman -Syu "file>=5.38-1"
The problem has been fixed upstream in version 5.38.
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
Workaround
None.