---
title: "CVE-2017-12377\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2017-12377?format=md
keywords: index, follow
---

# CVE-2017-12377

Publication date 29 January 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2017-12377?format=md#impact-score)

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## Description

ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability
that could allow an unauthenticated, remote attacker to cause a denial of
service (DoS) condition or potentially execute arbitrary code on an
affected device. The vulnerability is due to improper input validation
checking mechanisms in mew packet files sent to an affected device. A
successful exploit could cause a heap-based buffer over-read condition in
mew.c when ClamAV scans the malicious file, allowing the attacker to cause
a DoS condition or potentially execute arbitrary code on the affected
device.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| clamav | 17.10 artful | Fixed 0.99.3+addedllvm-0ubuntu0.17.10.1 |
| 16.04 LTS xenial | Fixed 0.99.3+addedllvm-0ubuntu0.16.04.1 |
| 14.04 LTS trusty | Fixed 0.99.3+addedllvm-0ubuntu0.14.04.1 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12377)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-12377)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-12377)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-12377)

### Related Ubuntu Security Notices (USN)

+ [USN-3550-2](https://usn.ubuntu.com/USN-3550-2)
+ ClamAV vulnerabilities
+ 5 February 2018

+ [USN-3550-1](https://usn.ubuntu.com/USN-3550-1)
+ ClamAV vulnerabilities
+ 30 January 2018

### Other references

* <http://blog.clamav.net/2018/01/clamav-0993-has-been-released.html>
* <https://www.cve.org/CVERecord?id=CVE-2017-12377>