Buffer overflow in Cisco Clamav
CVE-2021-1405
A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper variable initialization that may result in an NULL pointer read. An attacker could exploit this vulnerability by sending a crafted email to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.030 (87.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000
Affected products
- Cisco Clamav — versions unspecified
- Clamav
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- blog.clamav.net/2021/04/clamav-01032-security-patch-release.html (vendor-advisory, Release Notes, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2021/04/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202104-07 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-1405?
- CVE-2021-1405 is a high-severity vulnerability in Cisco Clamav, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-04-08.
- How severe is CVE-2021-1405?
- High severity. CVSS v3 base score is 7.5 out of 10.