CVE Vulnerabilities

CVE-2017-10621

Uncontrolled Resource Consumption

Published: Oct 13, 2017 | Modified: Apr 20, 2025
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

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;

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Name Vendor Start Version End Version
Junos Juniper 12.1x45 (including) 12.1x45 (including)
Junos Juniper 12.3x48 (including) 12.3x48 (including)
Junos Juniper 14.1 (including) 14.1 (including)
Junos Juniper 14.1x53 (including) 14.1x53 (including)
Junos Juniper 14.2 (including) 14.2 (including)
Junos Juniper 15.1 (including) 15.1 (including)
Junos Juniper 15.1x49 (including) 15.1x49 (including)
Junos Juniper 15.1x53 (including) 15.1x53 (including)
Junos Juniper 16.1 (including) 16.1 (including)
Junos Juniper 16.2 (including) 16.2 (including)

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References