---
title: "CVE-2023-27478\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-2023-27478?format=md
keywords: index, follow
---

# CVE-2023-27478

Publication date 7 March 2023

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**6.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2023-27478?format=md#impact-score)

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## Description

libmemcached-awesome is an open source C/C++ client library and tools for
the memcached server. `libmemcached` could return data for a previously
requested key, if that previous request timed out due to a low
`POLL\_TIMEOUT`. This issue has been addressed in version 1.1.4. Users are
advised to upgrade. There are several ways to workaround or lower the
probability of this bug affecting a given deployment. 1: use a reasonably
high `POLL\_TIMEOUT` setting, like the default. 2: use separate libmemcached
connections for unrelated data. 3: do not re-use libmemcached connections
in an unknown state.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2023-27478?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libmemcached | 23.04 lunar | Fixed 1.1.4-1 |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Ignored end of standard support |

---

* [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-2023-27478?format=md#patch-details)

## Notes

---

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

introduced in 1.1.0-beta1, fixed in 1.1.4

### 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 |
| --- | --- |
| libmemcached | * Upstream:   [48dcc61](https://github.com/awesomized/libmemcached/commit/48dcc61a) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.5 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-27478)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-27478)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2023-27478)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2023-27478)

### Other references

* <https://github.com/awesomized/libmemcached/security/advisories/GHSA-wwmh-39wj-fx59>
* <https://github.com/awesomized/libmemcached/releases/tag/1.1.4>
* <https://www.cve.org/CVERecord?id=CVE-2023-27478>