Buffer overflow in PPP - CVE-2022-4603

Vulnerability identifier: #VU84790

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-4603

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the dumpppp() function in pppdump. A remote attacker can pass specially crafted data to the daemon and perform a denial of service (DoS) attack.

PPP
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
openSUSE Leap Micro
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
Desktop Applications Module
openSUSE Leap
openEuler
Fedora
ppp-debuginfo
ppp-devel
ppp
ppp-debugsource
ppp-modem
ppp-help

Install updates from vendor's website.

PPP - update to 2.5.0
ppp-debuginfo - addressed in versions 2.4.7-4.6.1, 2.4.7-150000.5.13.1
ppp-devel - addressed in versions 2.4.7-4.6.1, 2.4.7-150000.5.13.1
ppp - addressed in versions 2.4.7-4.6.1, 2.4.7-150000.5.13.1
ppp-debugsource - addressed in versions 2.4.7-4.6.1, 2.4.7-150000.5.13.1
ppp-modem - update to 2.4.7-150000.5.13.1
ppp - update to 2.4.8-4
ppp-debugsource - update to 2.4.8-4
ppp-debuginfo - update to 2.4.8-4
ppp-devel - update to 2.4.8-4
ppp-help - update to 2.4.8-4
ppp - update to 2.4.9-10.fc38

• https://vuldb.com/?id.216198
• https://github.com/ppp-project/ppp/commit/a75fb7b198eed50d769c80c36629f38346882cbf

• Denial of service in PPP
• SUSE update for ppp
• SUSE update for ppp
• Fedora 38 update for ppp
• openEuler update for ppp
• SUSE update for ppp