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CVE-2017-6420

Published: 6 August 2017

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.

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
clamav
Launchpad, Ubuntu, Debian
trusty
Released (0.99.2+addedllvm-0ubuntu0.14.04.2)
upstream
Released (0.99.3~beta1+dfsg-1)
xenial
Released (0.99.2+dfsg-0ubuntu0.16.04.2)
zesty
Released (0.99.2+dfsg-6ubuntu0.1)
Patches:
upstream: https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc
upstream: https://github.com/vrtadmin/clamav-devel/commit/60671e3deb1df6c626e5c7e13752c2eec1649f98

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H