CVE-2020-8597

Name: CVE-2020-8597
Creator: NVD / NIST
Published: 2020-02-03T23:15:11.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 19.43%

Last modified Jun 17, 2026

CVE-2020-8597 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflow in the eap_request and eap_response functions.. EPSS estimates a 19.43% chance of exploitation in the next 30 days.

Description

eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflow in the eap_request and eap_response functions.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

19.43%

97.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Point-To-Point Protocol Project	Point-To-Point Protocol	>= 2.4.2, <= 2.4.8
Wago	Pfc Firmware	< 03.04.10\(16\)
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.04

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00006.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/156662/pppd-2.4.8-Buffer-Overflow.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/156802/pppd-2.4.8-Buffer-Overflow.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Mar/6Mailing List, Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0630Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0631Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0633Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0634Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-809841.pdfThird Party Advisory
https://github.com/paulusmack/ppp/commit/8d7970b8f3db727fe798b65f3377fe6787575426Patch, Third Party Advisory
https://kb.netgear.com/000061806/Security-Advisory-for-Unauthenticated-Remote-Buffer-Overflow-Attack-in-PPPD-on-WAC510-PSV-2020-0136Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00005.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UNJNHWOO4XF73M2W56ILZUY4JQG3JXIR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YOFDAIOWSWPG732ASYUZNINMXDHY4APE/
https://security.gentoo.org/glsa/202003-19Third Party Advisory
https://security.netapp.com/advisory/ntap-20200313-0004/Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-224-04Third Party Advisory, US Government Resource
https://usn.ubuntu.com/4288-1/Third Party Advisory
https://usn.ubuntu.com/4288-2/Third Party Advisory
https://www.debian.org/security/2020/dsa-4632Third Party Advisory
https://www.kb.cert.org/vuls/id/782301Third Party Advisory, US Government Resource
https://www.synology.com/security/advisory/Synology_SA_20_02Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00006.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/156662/pppd-2.4.8-Buffer-Overflow.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/156802/pppd-2.4.8-Buffer-Overflow.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Mar/6Mailing List, Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0630Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0631Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0633Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0634Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-809841.pdfThird Party Advisory
https://github.com/paulusmack/ppp/commit/8d7970b8f3db727fe798b65f3377fe6787575426Patch, Third Party Advisory
https://kb.netgear.com/000061806/Security-Advisory-for-Unauthenticated-Remote-Buffer-Overflow-Attack-in-PPPD-on-WAC510-PSV-2020-0136Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00005.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UNJNHWOO4XF73M2W56ILZUY4JQG3JXIR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YOFDAIOWSWPG732ASYUZNINMXDHY4APE/
https://security.gentoo.org/glsa/202003-19Third Party Advisory
https://security.netapp.com/advisory/ntap-20200313-0004/Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-224-04Third Party Advisory, US Government Resource
https://usn.ubuntu.com/4288-1/Third Party Advisory
https://usn.ubuntu.com/4288-2/Third Party Advisory
https://www.debian.org/security/2020/dsa-4632Third Party Advisory
https://www.kb.cert.org/vuls/id/782301Third Party Advisory, US Government Resource
https://www.synology.com/security/advisory/Synology_SA_20_02Third Party Advisory

Timeline

Published: Feb 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8597?

eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflow in the eap_request and eap_response functions.

How severe is CVE-2020-8597?

CVE-2020-8597 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 19.43% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8597?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8597?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST