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CVE-2018-15378

Clam AntiVirus unmew11() Denial of Service Vulnerability

N/A
Published: October 15, 2018 at 05:00 PM UTC
Updated: June 17, 2026 at 01:42 AM UTC
3 products affected across 3 vendorsDebian LinuxUbuntu LinuxClamAV

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Severity
N/A
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

A vulnerability in ClamAV versions prior to 0.100.2 could allow an attacker to cause a denial of service (DoS) condition. The vulnerability is due to an error related to the MEW unpacker within the "unmew11()" function (libclamav/mew.c), which can be exploited to trigger an invalid read memory access via a specially crafted EXE file.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
12.0414.0416.0418.04
ClamAV· Clamav
95%
v < 0.100.2
Affected range stops below 0.100.2, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%
8.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (7)

x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.clamav.net/show_bug.cgi?id=12170
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2018/10/msg00014.html
Third Party Advisoryx_refsource_SECUNIAPermissions Required
Source: [email protected]
https://secuniaresearch.flexerasoftware.com/advisories/83000/
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/201904-12
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3789-1/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3789-2/
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.flexera.com/company/secunia-research/advisories/SR-2018-23.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUM[email protected]
Confidentiality
NONE
Integrity
NONE
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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