Log Message:
security/clamav: update to 0.102.3

Update clamav to 0.102.3.

## 0.102.3

ClamAV 0.102.3 is a bug patch release to address the following issues.

- [CVE-2020-3327](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3327):
  Fix a vulnerability in the ARJ archive parsing module in ClamAV 0.102.2 that
  could cause a Denial-of-Service (DoS) condition. Improper bounds checking of
  an unsigned variable results in an out-of-bounds read which causes a crash.

  Special thanks to Daehui Chang and Fady Othman for helping identify the ARJ
  parsing vulnerability.

- [CVE-2020-3341](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3341):
  Fix a vulnerability in the PDF parsing module in ClamAV 0.101 - 0.102.2 that
  could cause a Denial-of-Service (DoS) condition. Improper size checking of
  a buffer used to initialize AES decryption routines results in an out-of-
  bounds read which may cause a crash. Bug found by OSS-Fuzz.

- Fix "Attempt to allocate 0 bytes" error when parsing some PDF documents.

- Fix a couple of minor memory leaks.

- Updated libclamunrar to UnRAR 5.9.2.