#VU52596 Predictable from Observable State in systemd - CVE-2020-13529

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Main Vulnerability Database Vulnerabilities #VU52596

#VU52596 Predictable from Observable State in systemd - CVE-2020-13529

Published: April 26, 2021


Vulnerability identifier: #VU52596
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-13529
CWE-ID: CWE-341
Exploitation vector: Adjecent network
Exploit availability: No public exploit available
Vulnerable software:
systemd
Software vendor:
Freedesktop.org

Description

The vulnerability allows a remote attacker to reconfigure the target device.

The vulnerability exists due to usage of predictable Transactions Identifiers when processing DHCP ACK packets. A remote attacker on the same network can forge the FORCERENEW and DHCP ACK packets to reconfigure the systemd’s DHCP client settings.


Remediation

Install updates from vendor's website.

External links