HOMEVULNERABILITIESCVE-2020-3123
HIGH

CVE-2020-3123

CWE-125Published: February 5, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

A vulnerability in the Data-Loss-Prevention (DLP) module in Clam AntiVirus (ClamAV) Software versions 0.102.1 and 0.102.0 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to an out-of-bounds read affecting users that have enabled the optional DLP feature. An attacker could exploit this vulnerability by sending a crafted email file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.

NVD Source

Technical Analysis

CVE-2020-3123 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
clamav1 product(s)
clamav
Source: NVD CPE · 7 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://blog.clamav.net/2020/02/clamav-01022-security-patch-released.html
ADVISORYhttps://quickview.cloudapps.cisco.com/quickview/bug/CSCvs59062
ADVISORYhttps://security.gentoo.org/glsa/202003-46
ADVISORYhttps://usn.ubuntu.com/4280-1/
ADVISORYhttps://usn.ubuntu.com/4280-2/
ADVISORYhttps://blog.clamav.net/2020/02/clamav-01022-security-patch-released.html
ADVISORYhttps://quickview.cloudapps.cisco.com/quickview/bug/CSCvs59062
ADVISORYhttps://security.gentoo.org/glsa/202003-46
ADVISORYhttps://usn.ubuntu.com/4280-1/
ADVISORYhttps://usn.ubuntu.com/4280-2/

All References (10)

→
https://blog.clamav.net/2020/02/clamav-01022-security-patch-released.htmlRelease Notes · Vendor Advisory
→
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvs59062Third Party Advisory
→
https://security.gentoo.org/glsa/202003-46Third Party Advisory
→
https://usn.ubuntu.com/4280-1/Third Party Advisory
→
https://usn.ubuntu.com/4280-2/Third Party Advisory
→
https://blog.clamav.net/2020/02/clamav-01022-security-patch-released.htmlRelease Notes · Vendor Advisory
→
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvs59062Third Party Advisory
→
https://security.gentoo.org/glsa/202003-46Third Party Advisory
→
https://usn.ubuntu.com/4280-1/Third Party Advisory
→
https://usn.ubuntu.com/4280-2/Third Party Advisory

Quick Facts

CVE IDCVE-2020-3123
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
Affected2 vendor(s)
PublishedFeb 5, 2020

Related CVEs (CWE-125)

CVE-2009-2523
10.0
CVE-2021-21777
10.0
CVE-2013-0767
10.0
CVE-2021-41556
10.0
CVE-2017-14451
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-3123 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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