CVE-2024-20505

ClamAV Memory Handling DoS

HIGH

7.5

CVSS Score

Published: September 4, 2024 at 09:23 PM UTC

Updated: June 17, 2026 at 07:07 AM UTC

1 product affected across 1 vendorClamAV

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Severity

HIGH7.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

A vulnerability in the PDF parsing module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an out of bounds read. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. An exploit could allow the attacker to terminate the scanning process.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

ClamAV · Clamav

95%

v < 0.103.120.104.0 ≤ v < 1.0.71.2.0 ≤ v < 1.3.20.103.0 0.103.1 0.103.10 0.103.11 0.103.2 0.103.3 0.103.4 0.103.5 0.103.6 0.103.7 0.103.8 0.103.9 0.104.x 0.105.x 1.0.0 1.0.1 1.0.2 1.0.3 1.0.4 1.0.5 1.0.6 1.2.x 1.3.2 1.4.0

Affected range stops below 0.103.12, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.0.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.3.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://blog.clamav.net/2024/09/clamav-141-132-107-and-010312-security.html

References (2)

PatchVendor Advisory

Source: [email protected]

https://blog.clamav.net/2024/09/clamav-141-132-107-and-010312-security.html

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2024/12/msg00004.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-125

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