Use After Free in Clamav
CVE-2017-12374
The ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of input validation checking mechanisms during certain mail parsing operations (mbox.c operations on bounce messages). If successfully exploited, the ClamAV software could allow a variable pointing to the mail body which could cause a used after being free (use-after-free) instance which may lead to a disruption of services on an affected device to include a denial of service condition.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.050 (91.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.050 · newest: 0.050 · change: 0.000
Affected products
- Clamav
- Debian Linux — versions 7.0
- Clamav Antivirus Software Versions 0.99.2 And Prior — versions ClamAV AntiVirus software versions 0.99.2 and prior
Weakness classification (CWE)
References
- usn.ubuntu.com/3550-1/ (vendor-advisory)
- usn.ubuntu.com/3550-2/ (vendor-advisory)
- lists.debian.org/debian-lts-announce/2018/01/msg00035.html (mailing-list, Mailing List, Third Party Advisory)
- blog.clamav.net/2018/01/clamav-0993-has-been-released.html (Release Notes, Vendor Advisory)
- bugzilla.clamav.net/show_bug.cgi (Exploit, Patch, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-12374?
- CVE-2017-12374 is a high-severity vulnerability in Clamav, classified under Use After Free. CVSS score: 7.5/10. Published 2018-01-26.
- How severe is CVE-2017-12374?
- High severity. CVSS v3 base score is 7.5 out of 10.