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Fencer Intel
high 7.5

CVE-2019-1787 json

Clam AntiVirus PDF Denial of Service Vulnerability

published 7y ago modified 4mo ago also EUVD-2019-10344

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

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.

Patch / fix

  • clamav Debian 14, Debian 13, Debian 12 0.101.2+dfsg-1

debian advisories DEBIAN-CVE-2019-1787

  • clamav Ubuntu 14.04 LTS 0.100.3+dfsg-0ubuntu0.14.04.1
  • clamav Ubuntu 16.04 LTS 0.100.3+dfsg-0ubuntu0.16.04.1
  • clamav Ubuntu 18.04 LTS 0.100.3+dfsg-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-1787

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • clamav SLE Module for Basesystem 15 SP2, SLE Module for Basesystem 15 SP1 0.103.0-3.23.1
  • clamav SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 0.100.3-0.20.21.1
  • clamav SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +11 more 0.100.3-33.21.1
  • clamav SLE Module for Basesystem 15 0.100.3-3.9.1

suse advisories SUSE-SU-2020:3790-1SUSE-SU-2019:14015-1SUSE-SU-2019:0897-1SUSE-SU-2019:0861-1

  • clamav openSUSE Tumbleweed 0.103.3-1.4
  • clamav openSUSE Leap 15.2 0.103.0-lp152.6.3.1
  • clamav openSUSE Leap 15.1 0.103.0-lp151.2.12.1
  • clamav openSUSE Leap 15.0 0.100.3-lp150.2.10.1

opensuse advisories openSUSE-SU-2024:10685-1openSUSE-SU-2020:2276-1openSUSE-SU-2020:2268-1openSUSE-SU-2019:1210-1

  • clamav Alpine 3.24, Alpine 3.23, Alpine 3.22 +16 more 0.100.3-r0

alpine advisories ALPINE-CVE-2019-1787

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2019-1787 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-1787 updated cvss 5.3

clamav: out-of-bounds heap read when scanning PDF documents

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

1.68% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugs.chromium.org https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12181 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • Cisco ClamAV

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.