Bug 789399 (CVE-2020-13529)

Summary:	<sys-apps/systemd-{248.5,249}: DHCP ack spoofing (CVE-2020-13529)
Product:	Gentoo Security	Reporter:	Sam James <sam>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal	CC:	systemd
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/systemd/systemd/issues/16774
Whiteboard:	A3 [glsa+ cve]
Package list:		Runtime testing required:	---
Bug Depends on:	803041
Bug Blocks:

Description Sam James archtester

2021-05-11 08:02:09 UTC

Description:
"An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server."

Disclosure: https://talosintelligence.com/vulnerability_reports/TALOS-2020-1142

Bug: https://github.com/systemd/systemd/issues/16774

Comment 1 GLSAMaker/CVETool Bot gentoo-dev

2021-07-20 19:21:44 UTC

This issue was resolved and addressed in
 GLSA 202107-48 at https://security.gentoo.org/glsa/202107-48
by GLSA coordinator Sam James (sam_c).

Comment 2 Sam James archtester

2021-07-20 19:22:22 UTC

All done.