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Fencer Vulns
high 7.5

CVE-2019-1788 json

ClamAV OLE2 File Out-Of-Bounds Write Vulnerability

published 2019-04-08 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10345

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

A vulnerability in the Object Linking & Embedding (OLE2) file 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 condition on an affected device. The vulnerability is due to a lack of proper input and validation checking mechanisms for OLE2 files sent an affected device. An attacker could exploit this vulnerability by sending malformed OLE2 files to the device running an affected version ClamAV Software. An exploit could allow the attacker to cause an out-of-bounds write 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-2019-1788

  • 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-2019-1788

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-2019-1788

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

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-2019-1788 updated cvss 5.3

clamav: out-of-bounds heap write when scanning OLE2 files

  • 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
23 mo ago

Exploit prediction

1.84% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.chromium.org https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12166 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 Vulns 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.