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Fencer Vulns
high 7.5

CVE-2017-12374 json

The ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cau…

published 2018-01-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3947

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

The ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that 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 input validation checking mechanisms during certain mail parsing operations (mbox.c operations on bounce messages). If successfully exploited, the ClamAV software could allow a variable pointing to the mail body which could cause a used after being free (use-after-free) instance which may lead to a disruption of services on an affected device to include a denial of service condition.

Patch / fix

  • clamav Debian 14, Debian 13, Debian 12 0.99.3~beta2+dfsg-1

debian advisories DEBIAN-CVE-2017-12374

  • clamav Ubuntu 14.04 LTS 0.99.3+addedllvm-0ubuntu0.14.04.1
  • clamav Ubuntu 16.04 LTS 0.99.3+addedllvm-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2017-12374

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 SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for SAP 12 SP1 +9 more 0.99.3-33.5.1
  • clamav SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +2 more 0.99.3-0.20.3.2

suse advisories SUSE-SU-2018:0255-1SUSE-SU-2018:0254-1

  • clamav openSUSE Tumbleweed 0.103.3-1.4

opensuse advisories openSUSE-SU-2024:10685-1

  • clamav Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 0.99.3-r0

alpine advisories ALPINE-CVE-2017-12374

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

  • clamav Arch Linux 0.99.3-1

arch linux advisories AVG-601

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-2017-12374 updated

clamav: Multiple vulnerabilities fixed in 0.99.3

  • 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

4.98% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.clamav.net https://bugzilla.clamav.net/show_bug.cgi?id=11939 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • n/a ClamAV AntiVirus software versions 0.99.2 and prior

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.