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Fencer Vulns
critical 9.8

CVE-2017-12377 in the critical feed json

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

published 2018-01-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3950

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.6%
EPSS 11.6% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

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 or potentially execute arbitrary code on an affected device. The vulnerability is due to improper input validation checking mechanisms in mew packet files sent to an affected device. A successful exploit could cause a heap-based buffer over-read condition in mew.c when ClamAV scans the malicious file, allowing the attacker to cause a DoS condition or potentially execute arbitrary code on the affected device.

Patch / fix

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

debian advisories DEBIAN-CVE-2017-12377

  • 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-2017-12377

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-2017-12377

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-2017-12377 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
total
Assessed
23 mo ago

Exploit prediction

11.58% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.clamav.net https://bugzilla.clamav.net/show_bug.cgi?id=11943 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/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.