ppp pppdump pppdump.c dumpppp array index

published 2022-12-18 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-51935

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 distros 5 links 1

samba ppp 2.5.0

debian suse opensuse alpine azure linux

ppp Debian 14, Debian 13 2.5.0-1+2

debian advisories DEBIAN-CVE-2022-4603

ppp SLE Real Time 15 SP4, SLE Module for Desktop Applications 15 SP5, SLE Micro 5.5 +6 more 2.4.7-150000.5.13.1
ppp SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 2.4.7-4.6.1

suse advisories SUSE-SU-2024:2380-1 SUSE-SU-2023:4965-1 SUSE-SU-2023:4961-1

ppp openSUSE Tumbleweed 2.5.0-1.1

opensuse advisories openSUSE-SU-2024:13529-1

ppp Alpine 3.14 2.4.9-r1
ppp Alpine 3.15 2.4.9-r3
ppp Alpine 3.16 2.4.9-r4
ppp Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 2.4.9-r6

alpine advisories ALPINE-CVE-2022-4603

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

ppp Azure Linux 3.0 2.5.0-1

azure linux advisories AZL-36979

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

github.com/ppp-project/ppp@a75fb7b commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-4603 updated 2026-11-07 cvss 5.3

ppp: improper validation of array index of the component pppdump

Red Hat Enterprise Linux 7 ppp Red Hat Enterprise Linux 8 ppp, network-scripts-ppp Red Hat Enterprise Linux 9 ppp
affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

unspecified ppp

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com /ppp-project/ppp/commit/a75fb7b198eed50d769c80c36629f38346882cbf
patch, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/J43NP7ABHOCIWOFHWCH6ZCZOYKZH6723/
vendor-advisory
vuldb.com /?id.216198
third-party-advisory
lists.fedoraproject.org /archives/list/package-announce@lists.fedoraproject.org/message/J43NP7ABHOCIWOFHWCH6ZCZOYKZH6723/

Sources

CVE List CVE-2022-4603
NVD CVE-2022-4603

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary