7.4

CVE-2021-0267

An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD's DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved.

Data is provided by the National Vulnerability Database (NVD)
Juniper ≫ Junos Version19.4 Updater1
Juniper ≫ Junos Version19.4 Updater1-s1
Juniper ≫ Junos Version19.4 Updater1-s2
Juniper ≫ Junos Version19.4 Updater2
Juniper ≫ Junos Version19.4 Updater2-s1
Juniper ≫ Junos Version19.4 Updater2-s2
Juniper ≫ Junos Version19.4 Updater3
Juniper ≫ Junos Version20.1 Updater1
Juniper ≫ Junos Version20.1 Updater1-s1
Juniper ≫ Junos Version20.1 Updater1-s2
Juniper ≫ Junos Version20.1 Updater1-s3
Juniper ≫ Junos Version20.1 Updater1-s4
Juniper ≫ Junos Version20.1 Updater2
Juniper ≫ Junos Version20.2 Updater1
Juniper ≫ Junos Version20.2 Updater1-s1
Juniper ≫ Junos Version20.2 Updater1-s2
Juniper ≫ Junos Version20.2 Updater1-s3
Juniper ≫ Junos Version20.2 Updater2
Juniper ≫ Junos Version20.2 Updater2-s1
Juniper ≫ Junos Version20.2 Updater2-s2
Juniper ≫ Junos Version20.2 Updater2-s3
Juniper ≫ Junos Version20.3 Updater1
Juniper ≫ Junos Version20.3 Updater1-s1
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.06% 0.142
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 6.5 2.8 3.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 3.3 6.5 2.9
AV:A/AC:L/Au:N/C:N/I:N/A:P
sirt@juniper.net 7.4 2.8 4
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.