Use After Free in Clamav
CVE-2017-6420
The wwunpack function in libclamav/wwunpack.c in ClamAV 0.99.2 allows remote attackers to cause a denial of service (use-after-free) via a crafted PE file with WWPack compression.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.014 (70.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Clamav — versions 0.99.2
Weakness classification (CWE)
References
- bugzilla.clamav.net/show_bug.cgi (Permissions Required)
- github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-u… (Third Party Advisory)
- security.gentoo.org/glsa/201804-16 (vendor-advisory)
- github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-6420?
- CVE-2017-6420 is a medium-severity vulnerability in Clamav, classified under Use After Free. CVSS score: 5.5/10. Published 2017-08-07.
- How severe is CVE-2017-6420?
- Medium severity. CVSS v3 base score is 5.5 out of 10.