CVE-2022-4603 | ppp pppdump pppdump.c dumpppp array index

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.

Published: 2022-12-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-4603 is rated Low Risk (29.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.16%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-4603

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-27 0.12% 0.16% +0.04%
2 2025-11-21 0.71% 0.12% -0.60%
3 2025-11-18 — 0.71% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-4603

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 0.9 3.4 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2022-4603

OS Trackers for CVE-2022-4603

vendor priority summary link
alpine — CVE-2022-4603: 1 source package rows (ppp); 29 state rows across 8 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 24, open 5. https://security.alpinelinux.org/vuln/CVE-2022-4603
debian unimportant CVE-2022-4603 unimportant priority: Debian including 1 source packages (ppp), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2022-4603
redhat medium — https://access.redhat.com/security/cve/CVE-2022-4603
suse medium CVE-2022-4603 severity moderate: SUSE including 13 source package names (ppp-2.4.7-150000.5.13.1, ppp-2.4.7-150600.18.3, …), 30 product×package rows across 18 product lines (SUSE Linux Enterprise Micro 5.3, SUSE Linux Enterprise Micro 5.4, … (18 product lines)): Fixed 30. https://www.suse.com/security/cve/CVE-2022-4603/
ubuntu medium CVE-2022-4603 medium priority: Ubuntu including 1 source packages (ppp), 7 status rows across 7 suites (bionic, focal, jammy, kinetic, trusty, upstream, xenial): not-affected 7. https://ubuntu.com/security/CVE-2022-4603

Affected software / configurations for CVE-2022-4603

Vendor Product Version Raw CPE
samba ppp < 2.5.0 cpe:2.3:a:samba:ppp:*:*:*:*:*:linux:*:*
samba ppp < 2.5.0 cpe:2.3:a:samba:ppp:*:*:*:*:*:solaris:*:*

References for CVE-2022-4603

cvelogic Threat Intelligence