What’s Vulnerable › Vulnerabilities

CVE-2019-1787: Clam AntiVirus PDF Denial of Service Vulnerability

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-04-08 · updated 2026-06-17
• Weakness: CWE-20

Description

A vulnerability in the Portable Document Format (PDF) scanning functionality of Clam AntiVirus (ClamAV) Software versions 0.101.1 and prior could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of proper data handling mechanisms within the device buffer while indexing remaining file data on an affected device. An attacker could exploit this vulnerability by sending crafted PDF files to an affected device. A successful exploit could allow the attacker to cause a heap buffer out-of-bounds read condition, resulting in a crash that could result in a denial of service condition on an affected device.

Affected products

• Cisco ClamAV: through 0.101.1
• Debian Linux: 8.0
• openSUSE Leap: 15.0, 42.3

References

• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00062.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00064.html
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12181
• https://lists.debian.org/debian-lts-announce/2019/04/msg00019.html
• https://security.gentoo.org/glsa/201904-12
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00062.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00064.html
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12181
• https://lists.debian.org/debian-lts-announce/2019/04/msg00019.html
• https://security.gentoo.org/glsa/201904-12

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