---
title: "CVE-2018-1000085\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-2018-1000085?format=md
keywords: index, follow
---

# CVE-2018-1000085

Publication date 27 February 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2018-1000085?format=md#impact-score)

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## Description

ClamAV version version 0.99.3 contains a Out of bounds heap memory read
vulnerability in XAR parser, function xar\_hash\_check() that can result in
Leaking of memory, may help in developing exploit chains.. This attack
appear to be exploitable via The victim must scan a crafted XAR file. This
vulnerability appears to have been fixed in after commit
d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2018-1000085?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| clamav | 17.10 artful | Fixed 0.99.4+addedllvm-0ubuntu0.17.10.1 |
| 16.04 LTS xenial | Fixed 0.99.4+addedllvm-0ubuntu0.16.04.1 |
| 14.04 LTS trusty | Fixed 0.99.4+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)
* [Patch details](https://ubuntu.com/security/CVE-2018-1000085?format=md#patch-details)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

not included in final 0.99.3 release

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| clamav | * Upstream:   [d96a6b8](https://github.com/Cisco-Talos/clamav-devel/commit/d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.5 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000085)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-1000085)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-1000085)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-1000085)

### Related Ubuntu Security Notices (USN)

+ [USN-3592-1](https://usn.ubuntu.com/USN-3592-1)
+ ClamAV vulnerabilities
+ 8 March 2018

+ [USN-3592-2](https://usn.ubuntu.com/USN-3592-2)
+ ClamAV vulnerabilities
+ 8 March 2018

### Other references

* <http://www.openwall.com/lists/oss-security/2017/09/29/4>
* <https://www.cve.org/CVERecord?id=CVE-2018-1000085>