What is CVE-2021-31359?

CVE-2021-31359 is a high-severity vulnerability in Juniper Junos, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2021-10-19.

How severe is CVE-2021-31359?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Juniper Junos

CVE-2021-31359

A local privilege escalation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to cause the Juniper DHCP daemon (jdhcpd) process to crash, resulting in a Denial of Service (DoS), or execute…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (14.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Juniper Junos — versions 15.1, 17.4, 18.3
Juniper Junos_os_evolved — versions 20.4, 21.1
Juniper Networks Junos Os — versions 15.1, 17.4, 18.3
Juniper Networks Junos Os Evolved — versions unspecified, 21.1R1-EVO

Weakness classification (CWE)

References

sirt@juniper.net (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-31359?: CVE-2021-31359 is a high-severity vulnerability in Juniper Junos, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2021-10-19.
How severe is CVE-2021-31359?: High severity. CVSS v3 base score is 7.8 out of 10.