ALPINE-CVE-2021-1404
Record from OSV · Published April 8, 2021
A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| clamav | Alpine:v3.12 | 0.103.2-r0 |
| clamav | Alpine:v3.13 | 0.103.2-r0 |
| clamav | Alpine:v3.11 | 0.103.2-r0 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.12 | clamav | 0.100.0-r1, 0.97-r2, 0.97-r0 |
| Alpine:v3.13 | clamav | 0.99.1-r2, 0.100.1-r1, 0.100.2-r0 |
| Alpine:v3.11 | clamav | 0.99.2-r1, 0.97.8-r0, 0.97.5-r0 |
Timeline
- Apr 8, 2021 CVE Published
- Jun 15, 2026 CVE Updated
- Aug 8, 2026 Distribution Patch
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