Medium severity · published Aug 7, 2017
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
5.5
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
Clamav · Clamav
0.99.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-6420
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-6420
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
Issue Tracking
https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc
security.gentoo.org
https://security.gentoo.org/glsa/201804-16
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