CVE-2021-0267 is an Improper Input Validation vulnerability in Juniper Networks Junos OS, specifically affecting the JDHCPD's DHCP Relay Agent. An unauthenticated attacker can send a crafted DHCP packet to the device, causing a Denial of Service (DoS) by crashing the jdhcpd DHCP service, particularly impacting Broadband Subscriber Sessions. This vulnerability has a CVSSv3.1 score of 6.5 (Medium), indicating an attack vector of adjacent network access with low complexity and high impact on availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 19.4, < 19.4R3-S1CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 20.2, < 20.2R3CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
>= 20.3, < 20.3R2CPE match | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* | ||
19.4CPE matchmatch criteria | cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:* | ||
19.4CPE matchmatch criteria | cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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