---
title: "CVE-2018-1318\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-2018-1318?format=md
keywords: index, follow
---

# CVE-2018-1318

Publication date 29 August 2018

Last updated 26 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-1318?format=md#impact-score)

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## Description

Adding method ACLs in remap.config can cause a segfault when the user makes
a carefully crafted request. This affects versions Apache Traffic Server
(ATS) 6.0.0 to 6.2.2 and 7.0.0 to 7.1.3. To resolve this issue users
running 6.x should upgrade to 6.2.3 or later versions and 7.x users should
upgrade to 7.1.4 or later versions.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| trafficserver | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |

---

* [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-2018-1318?format=md#patch-details)

### 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 |
| --- | --- |
| trafficserver | * Other:   [e6dfda3](https://github.com/apache/trafficserver/commit/e6dfda305acf85250861ecfa14a7bd6bb2fad5c3) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1318)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-1318)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-1318)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-1318)

### Other references

* <http://www.openwall.com/lists/oss-security/2018/08/29/3>
* <https://github.com/apache/trafficserver/pull/3195>
* <https://www.cve.org/CVERecord?id=CVE-2018-1318>