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Fencer Vulns
high 7.5

CVE-2019-1798 json

Clam AntiVirus PE File Out-of-Bounds Read Vulnerability

published 2019-04-08 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10355

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

A vulnerability in the Portable Executable (PE) 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 PE files sent an affected device. An attacker could exploit this vulnerability by sending malformed PE files to the device running an affected version ClamAV Software. An exploit could allow the attacker to cause an 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
  • libclamunrar Debian 14, Debian 13, Debian 12 0.101.2-1

debian advisories DEBIAN-CVE-2019-1798

  • clamav SLE Module for Basesystem 15 SP2, SLE Module for Basesystem 15 SP1 0.103.0-3.23.1

suse advisories SUSE-SU-2020:3790-1

  • 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

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

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-2019-1798 updated cvss 7.5

clamav: use-after-free results in improper error validation

  • 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

1.10% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.clamav.net https://bugzilla.clamav.net/show_bug.cgi?id=12262 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.