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Fencer Vulns
medium 5.3

CVE-2023-20052 json

On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the DMG file parser of ClamAV…

published 2023-02-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-24231

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
7.0%
EPSS 7.0% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the DMG file parser of ClamAV versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability is due to enabling XML entity substitution that may result in XML external entity injection. An attacker could exploit this vulnerability by submitting a crafted DMG file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to leak bytes from any file that may be read by the ClamAV scanning process.

Patch / fix

  • cisco secure_endpoint 1.20.2, 1.21.1, 7.5.9, 8.1.5
  • cisco secure_endpoint_private_cloud 3.6.0
  • stormshield stormshield_network_security 3.7.35, 3.11.23, 4.3.17, 4.6.4
  • clamav Debian 14, Debian 13, Debian 12 1.0.1+dfsg-1

debian advisories DEBIAN-CVE-2023-20052

  • clamav Ubuntu 18.04 LTS 0.103.8+dfsg-0ubuntu0.18.04.1
  • clamav Ubuntu 20.04 LTS 0.103.8+dfsg-0ubuntu0.20.04.1
  • clamav Ubuntu 22.04 LTS 0.103.8+dfsg-0ubuntu0.22.04.1
  • clamav Ubuntu Pro 14.04 LTS 0.103.8+dfsg-0ubuntu0.14.04.1+esm1
  • clamav Ubuntu Pro 16.04 LTS 0.103.8+dfsg-0ubuntu0.16.04.1+esm1

ubuntu advisories UBUNTU-CVE-2023-20052

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 SP5, SLES 12 SP5 0.103.8-3.24.1
  • clamav SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +14 more 0.103.8-150000.3.44.1
  • clamav SLES for SAP 12 SP4, SLES 12 SP4-LTSS, SLES 12 SP2-BCL +2 more 0.103.8-33.53.1

suse advisories SUSE-SU-2023:0471-1SUSE-SU-2023:0470-1SUSE-SU-2023:0453-1

  • clamav openSUSE Tumbleweed 0.103.8-1.1

opensuse advisories openSUSE-SU-2024:12696-1

  • clamav Alpine 3.17 0.105.2-r0
  • clamav Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.0.1-r0

alpine advisories ALPINE-CVE-2023-20052

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 CBL-Mariner 2.0 0.105.2-1

azure linux advisories AZL-13723

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2023-20052 updated cvss 5.3

clamav: DMG File Parsing XML Entity Expansion Vulnerability

  • 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

Exploit prediction

7.00% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • Cisco Cisco Secure Endpoint

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference
  • CWE-776 Improper Restriction of Recursive Entity References in DTDs

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.