---
title: "CVE-2022-40468\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-2022-40468?format=md
keywords: index, follow
---

# CVE-2022-40468

Publication date 19 September 2022

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2022-40468?format=md#impact-score)

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## Description

Potential leak of left-over heap data if custom error page templates
containing special non-standard variables are used. Tinyproxy commit
84f203f and earlier use uninitialized buffers in process\_request()
function.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| tinyproxy | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Ignored end of life, was needs-triage |
| 23.04 lunar | Ignored end of life, was needs-triage |
| 22.10 kinetic | Ignored end of life, was needs-triage |
| 22.04 LTS jammy | Fixed 1.11.0-1ubuntu0.1~esm1  Ubuntu Pro |
| 20.04 LTS focal | Fixed 1.10.0-4ubuntu0.1 |
| 18.04 LTS bionic | Fixed 1.8.4-5ubuntu0.1~esm2  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 1.8.3-3ubuntu16.04.1~esm2  Ubuntu Pro |
| 14.04 LTS trusty | Fixed 1.8.3-3ubuntu14.04.1~esm2  Ubuntu Pro |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

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## 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:3.1/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-2022-40468)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-40468)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-40468)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-40468)

### Related Ubuntu Security Notices (USN)

+ [USN-7140-1](https://usn.ubuntu.com/USN-7140-1)
+ Tinyproxy vulnerability
+ 9 December 2024

+ [USN-7140-2](https://usn.ubuntu.com/USN-7140-2)
+ Tinyproxy vulnerability
+ 6 January 2025

### Other references

* <https://github.com/tinyproxy/tinyproxy/issues/457>
* <https://github.com/tinyproxy/tinyproxy/commit/3764b8551463b900b5b4e3ec0cd9bb9182191cb7>
* <https://github.com/tinyproxy/tinyproxy>
* <https://github.com/tinyproxy/tinyproxy/blob/84f203fb1c4733608c7283bbe794005a469c4b00/src/reqs.c#L346>
* <https://www.cve.org/CVERecord?id=CVE-2022-40468>