Medium severity · published May 10, 2021
CVE-2020-13529
An exploitable denial-of-service vulnerability exists in Systemd 245
6.1
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
Systemd ·
Canonical Ubuntu 20.04 LTS, Systemd 245 · source: vendor, NVD
AI
Active IQ Unified Manager · Netapp
All versions, or not specified · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13529
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-13529
Mailing List
http://www.openwall.com/lists/oss-security/2021/08/04/2
Mailing List
http://www.openwall.com/lists/oss-security/2021/08/17/3
Mailing List
http://www.openwall.com/lists/oss-security/2021/09/07/3
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/
Third Party Advisory
https://security.gentoo.org/glsa/202107-48
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210625-0005/
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