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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

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
MD5 | 78100bc3f3d27517f1649fec19f91abe
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
MD5 | 2292db61aa7aa7a29cce8f3e68387db3
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
MD5 | 7874a80a96e6739b9bcfc28b5e49c853
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