Vulnerability Monitor

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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.

Published

2017-08-07T03:29:00.307

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 5.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	clamav	clamav	0.99.2	Yes

References

https://bugzilla.clamav.net/show_bug.cgi?id=11798 Permissions Required ([email protected])
https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-use-after-free-pe.md Third Party Advisory ([email protected])
https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc Issue Tracking, Patch, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201804-16 ([email protected])
https://bugzilla.clamav.net/show_bug.cgi?id=11798 Permissions Required (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/varsleak/varsleak-vul/blob/master/clamav-vul/use-after-free/clamav-use-after-free-pe.md Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/vrtadmin/clamav-devel/commit/dfc00cd3301a42b571454b51a6102eecf58407bc Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201804-16 (af854a3a-2127-422b-91ae-364da2661108)