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Vulnerability details: VCID-tgh6-r3ep-aaas
Vulnerability ID VCID-tgh6-r3ep-aaas
Aliases CVE-2017-6420
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-6420.html
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epss 0.00474 https://api.first.org/data/v1/epss?cve=CVE-2017-6420
epss 0.00474 https://api.first.org/data/v1/epss?cve=CVE-2017-6420
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epss 0.00474 https://api.first.org/data/v1/epss?cve=CVE-2017-6420
epss 0.00474 https://api.first.org/data/v1/epss?cve=CVE-2017-6420
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6420
cvssv2 4.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
generic_textual Medium https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-use-after-free-pe.md
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2017-6420
cvssv3 5.5 https://nvd.nist.gov/vuln/detail/CVE-2017-6420
archlinux Critical https://security.archlinux.org/AVG-601
generic_textual Medium https://ubuntu.com/security/notices/USN-3393-1
generic_textual Medium https://ubuntu.com/security/notices/USN-3393-2
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-6420.html
https://api.first.org/data/v1/epss?cve=CVE-2017-6420
https://bugzilla.clamav.net/show_bug.cgi?id=11798
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6420
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-use-after-free-pe.md
https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc
https://security.gentoo.org/glsa/201804-16
https://ubuntu.com/security/notices/USN-3393-1
https://ubuntu.com/security/notices/USN-3393-2
ASA-201802-1 https://security.archlinux.org/ASA-201802-1
AVG-601 https://security.archlinux.org/AVG-601
cpe:2.3:a:clamav:clamav:0.99.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:clamav:clamav:0.99.2:*:*:*:*:*:*:*
CVE-2017-6420 https://nvd.nist.gov/vuln/detail/CVE-2017-6420
USN-3393-1 https://usn.ubuntu.com/3393-1/
USN-3393-2 https://usn.ubuntu.com/3393-2/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-6420
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-6420
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.43031
EPSS Score 0.00388
Published At March 29, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.