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CVE-2017-6420

Good to know:

Date: August 6, 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.

Language: C

Severity Score

5.5

Related Resources (8)

Url: https://bugzilla.clamav.net/show_bug.cgi?id=11798

Url: https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-use-after-free-pe.md

Url: https://security.gentoo.org/glsa/201804-16

Url: https://nvd.nist.gov/vuln/detail/CVE-2017-6420

Url: https://security-tracker.debian.org/tracker/CVE-2017-6420

Url: https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2017-6420

Url: https://www.mend.io/vulnerability-database/CVE-2017-6420

Severity Score

5.5

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

Upgrade Version

Upgrade to version clamav-0.99.3-beta1

CVSS v3.1

Base Score:	5.5
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.3
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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