CVE-2020-13529

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-05-10 · updated 2026-10-14
Weakness: CWE-290

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.

Affected products

Fedoraproject Fedora: 33
Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
NetApp Cloud Backup: all versions
systemd: 245

References

http://www.openwall.com/lists/oss-security/2021/08/04/2
http://www.openwall.com/lists/oss-security/2021/08/17/3
http://www.openwall.com/lists/oss-security/2021/09/07/3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
https://security.gentoo.org/glsa/202107-48
https://security.netapp.com/advisory/ntap-20210625-0005/
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1142
http://www.openwall.com/lists/oss-security/2021/08/04/2
http://www.openwall.com/lists/oss-security/2021/08/17/3
http://www.openwall.com/lists/oss-security/2021/09/07/3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
https://security.gentoo.org/glsa/202107-48

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