# CVE-2018-1000085: Information disclosure in n/a

> An out-of-bounds heap memory read in ClamAV's XAR parser allows attackers to leak memory contents by tricking a user into scanning a crafted file.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 13 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** ALPINE-CVE-2018-1000085, CLEANSTART-2026-EI70950, DEBIAN-CVE-2018-1000085, GHSA-7p5r-r9rq-7w35, UBUNTU-CVE-2018-1000085

## What is CVE-2018-1000085?

CVE-2018-1000085 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 13 Mar 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2018-1000085?

It affects 3 products.


Products: Canonical Ubuntu Linux, Clamav Clamav, Debian Debian Linux.

## How do I fix CVE-2018-1000085?

Apply the vendor's patch.

## Is CVE-2018-1000085 being exploited?

There is no known exploitation of CVE-2018-1000085 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-1000085 and fix it if it is affected.

What it is: CVE-2018-1000085 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 13 Mar 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-1000085 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-1000085/ (Markdown: https://insights.sbomify.com/CVE-2018-1000085/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-1000085
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-1000085
- OSV: https://osv.dev/vulnerability/CVE-2018-1000085

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-1000085/
Summaries are generated and may contain mistakes; the official description above is the record.