file: heap-based buffer overflow in cdf_read_property_info in cdf.c (CVE-2019-18218)

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).

References:

• https://nvd.nist.gov/vuln/detail/CVE-2019-18218
• https://security-tracker.debian.org/tracker/CVE-2019-18218

Patch:

https://github.com/file/file/commit/46a8443f76cec4b41ec736eca396984c74664f84

Affected branches:

• master
• 3.10-stable
• 3.9-stable
• 3.8-stable
• 3.7-stable