---
title: "CVE-2022-4603\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-2022-4603?format=md
keywords: index, follow
---

# CVE-2022-4603

Publication date 18 December 2022

Last updated 4 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-2022-4603?format=md#impact-score)

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## Description

A vulnerability classified as problematic has been found in ppp. Affected
is the function dumpppp of the file pppdump/pppdump.c of the component
pppdump. The manipulation of the argument spkt.buf/rpkt.buf leads to
improper validation of array index. The real existence of this
vulnerability is still doubted at the moment. The name of the patch is
a75fb7b198eed50d769c80c36629f38346882cbf. It is recommended to apply a
patch to fix this issue. VDB-216198 is the identifier assigned to this
vulnerability. NOTE: pppdump is not used in normal process of setting up a
PPP connection, is not installed setuid-root, and is not invoked
automatically in any scenario.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2022-4603?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ppp | 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 | Not affected |

---

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

## Notes

---

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

This CVE was disputed, marking as not-affected

## 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 | Required |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

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

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4603)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-4603)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-4603)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-4603)

### Other references

* <https://github.com/ppp-project/ppp/commit/a75fb7b198eed50d769c80c36629f38346882cbf>
* <https://vuldb.com/?id.216198>
* <https://www.cve.org/CVERecord?id=CVE-2022-4603>