What is CVE-2017-10621?

CVE-2017-10621 is a medium-severity vulnerability in Juniper Junos, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2017-10-13.

How severe is CVE-2017-10621?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Juniper Junos

CVE-2017-10621

A denial of service vulnerability in telnetd service on Juniper Networks Junos OS allows remote unauthenticated attackers to cause a denial of service. Affected Junos OS releases are: 12.1X46 prior to 12.1X46-D71; 12.3X48 prior to 12.3X48-D50; 14.1 prior to 14.1R8-S5, 14.1R9; 14.1X53 prior to 14.1X53-D50; 14.2 prior to 14.2R7-S9, 14.2R8; 15.1 prior to 15.1F2-S16, 15.1F5-S7, 15.1F6-S6, 15.1R5-S2, 15.1R6; 15.1X49 prior to 15.1X49-D90; 15.1X53 prior to 15.1X53-D47; 16.1 prior to 16.1R4-S1, 16.1R5; 16.2 prior to 16.2R1-S3, 16.2R2;

Vulnerability class: DoS (Denial of Service)

EPSS: 0.018 (76.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Juniper Junos — versions 12.1x45, 12.3x48, 14.1
Juniper Networks Junos Os — versions 15.1X49 prior to 15.1X49-D90, 15.1 prior to 15.1F2-S16, 15.1F5-S7, 15.1F6-S6, 15.1R5-S2, 15.1R6, 14.1X53 prior to 14.1X53-D50

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

sirt@juniper.net (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2017-10621?: CVE-2017-10621 is a medium-severity vulnerability in Juniper Junos, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2017-10-13.
How severe is CVE-2017-10621?: Medium severity. CVSS v3 base score is 5.3 out of 10.