CVE-2017-6420

MEDIUM

Clamav - Use After Free

Title source: rule

Description

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.

References (4)

[Permissions Required] https://bugzilla.clamav.net/show_bug.cgi?id=11798

[Third Party Advisory] https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-use-after-free-pe.md

View Writeup ZIP pw:eip

[Issue Tracking, Patch, Third Party Advisory] https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc

View Patch ZIP pw:eip

[Third Party Advisory] https://security.gentoo.org/glsa/201804-16

Scores

CVSS v3 5.5

EPSS 0.0038

EPSS Percentile 59.4%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Details

CWE

CWE-416

Status published

Products (2)

clamav/clamav

n/a/n/a

Published Aug 07, 2017

Tracked Since Feb 18, 2026