Vulnerability · Published Apr 8, 2021 · Assigned by cisco
CVE-2021-1404Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability
High 7.5
In plain English
A high-severity improper input validation in ClamAV from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | clamav | 0.103.2-r0 | ALPINE-CVE-2021-1404 |
| Alpine:v3.21 | clamav | 0.103.2-r0 | ALPINE-CVE-2021-1404 |
| Alpine:v3.22 | clamav | 0.103.2-r0 | ALPINE-CVE-2021-1404 |
| Alpine:v3.23 | clamav | 0.103.2-r0 | ALPINE-CVE-2021-1404 |
| Alpine:v3.24 | clamav | 0.103.2-r0 | ALPINE-CVE-2021-1404 |
| Debian:12 | clamav | 0.103.2+dfsg-1 | DEBIAN-CVE-2021-1404 |
| Debian:13 | clamav | 0.103.2+dfsg-1 | DEBIAN-CVE-2021-1404 |
| Debian:14 | clamav | 0.103.2+dfsg-1 | DEBIAN-CVE-2021-1404 |
Affected products (as reported)
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html vendor-advisory, x_refsource_CISCO