---
title: "CVE-2019-9637\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-2019-9637?format=md
keywords: index, follow
---

# CVE-2019-9637

Publication date 8 March 2019

Last updated 25 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-2019-9637?format=md#impact-score)

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## Description

An issue was discovered in PHP before 7.1.27, 7.2.x before 7.2.16, and
7.3.x before 7.3.3. Due to the way rename() across filesystems is
implemented, it is possible that file being renamed is briefly available
with wrong permissions while the rename is ongoing, thus enabling
unauthorized users to access the data.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| php5 | 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Fixed 5.5.9+dfsg-1ubuntu4.29 |
| php7.0 | 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Fixed 7.0.33-0ubuntu0.16.04.3 |
| 14.04 LTS trusty | Not in release |
| php7.2 | 19.04 disco | Fixed 7.2.15-0ubuntu3 |
| 18.10 cosmic | Fixed 7.2.15-0ubuntu0.18.10.2 |
| 18.04 LTS bionic | Fixed 7.2.15-0ubuntu0.18.04.2 |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |
| php7.3 | 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release |
| 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-2019-9637?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 |
| --- | --- |
| php7.2 | * Upstream:   <http://git.php.net/?p=php-src.git;a=commit;h=e3133e4db70476fb7adfdedb738483e2255ce0e1> |

## 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 | High |
  | Integrity impact | None |
  | Availability impact | None |
* 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:H/I:N/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9637)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-9637)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-9637)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-9637)

### Related Ubuntu Security Notices (USN)

+ [USN-3922-2](https://usn.ubuntu.com/USN-3922-2)
+ PHP vulnerabilities
+ 23 April 2019

+ [USN-3922-3](https://usn.ubuntu.com/USN-3922-3)
+ PHP vulnerabilities
+ 25 April 2019

+ [USN-3922-1](https://usn.ubuntu.com/USN-3922-1)
+ PHP vulnerabilities
+ 26 March 2019

### Other references

* <https://www.debian.org/security/2019/dsa-4403>
* <https://www.cve.org/CVERecord?id=CVE-2019-9637>