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OpenAdvisories
High USN-4918-2 3 CVEs

clamav vulnerabilities

Published Apr 20, 2021 · Updated Apr 22, 2026

Summary

USN-4918-1 fixed several vulnerabilities in ClamAV. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:

It was discovered that ClamAV incorrectly handled parsing Excel documents.
A remote attacker could possibly use this issue to cause ClamAV to hang,
resulting in a denial of service. (CVE-2021-1252)

It was discovered that ClamAV incorrectly handled parsing PDF documents. A
remote attacker could possibly use this issue to cause ClamAV to crash,
resulting in a denial of service. (CVE-2021-1404)

It was discovered that ClamAV incorrectly handled parsing email. A remote
attacker could possibly use this issue to cause ClamAV to crash, resulting
in a denial of service. (CVE-2021-1405)

Fixed packages 1

ReleasePackageFixed in
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS clamav 0.103.2+dfsg-0ubuntu0.14.04.1+esm1

Vulnerabilities 3

  • High 7.5

    Clam AntiVirus (ClamAV) Excel XLM Parser Denial of Service Vulnerability

    A vulnerability in the Excel XLM macro parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to im…

  • High 7.5

    Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability

    A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffe…

  • High 7.5

    Clam AntiVirus (ClamAV) PDF Parser Denial of Service Vulnerability

    A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to im…

References

  • report
    https://ubuntu.com/security/CVE-2021-1252
  • report
    https://ubuntu.com/security/CVE-2021-1404
  • report
    https://ubuntu.com/security/CVE-2021-1405