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CVE-2020-13529

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2021-4361-03
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4361-03 - NetworkManager is a system network service that manages network devices and connections, attempting to keep active network connectivity when available. Its capabilities include managing Ethernet, wireless, mobile broadband, and PPPoE devices, as well as providing VPN integration with a variety of different VPN services.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-13529
SHA-256 | be9fcd92f0618a34a7d6f8ee9b497893333b2c71edfd546b0f6d8c6579c32a69
Gentoo Linux Security Advisory 202107-48
Posted Jul 20, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202107-48 - Multiple vulnerabilities have been found in systemd, the worst of which could result in a Denial of Service condition. Versions less than 248.5 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2020-13529, CVE-2021-33910
SHA-256 | 25e1bbbcade540161205016cfceaba05de79ff1f950598f4886465d9e893b747
Ubuntu Security Notice USN-5013-2
Posted Jul 20, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5013-2 - USN-5013-1 fixed several vulnerabilities in systemd. This update provides the corresponding update for Ubuntu 16.04 ESM. It was discovered that systemd incorrectly handled certain mount paths. A local attacker could possibly use this issue to cause systemd to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-13529, CVE-2021-33910
SHA-256 | 287e4074d79de02cd3d766899e09bac7f5427350422d727fb07ad78d7377f631
Ubuntu Security Notice USN-5013-1
Posted Jul 20, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5013-1 - It was discovered that systemd incorrectly handled certain mount paths. A local attacker could possibly use this issue to cause systemd to crash, resulting in a denial of service. Mitchell Frank discovered that systemd incorrectly handled DHCP FORCERENEW packets. A remote attacker could possibly use this issue to reconfigure servers.

tags | advisory, remote, denial of service, local
systems | linux, ubuntu
advisories | CVE-2020-13529, CVE-2021-33910
SHA-256 | fe61eaf938741caa2ac40aecda03248812fea81b222956ff21110da95e7b7368
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