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2018-10 Security Bulletin: Junos OS: Memory exhaustion denial of service vulnerability in Routing Protocols Daemon (RPD) with Juniper Extension Toolkit (JET) support (CVE-2018-0048)

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Article ID: JSA10882 SECURITY_ADVISORIES Last Updated: 12 Oct 2018Version: 3.0
Product Affected:
This issue affects Junos OS 17.2, 17.2X75, 17.3, 17.4, 18.1.
Problem:

A vulnerability in the Routing Protocols Daemon (RPD) with Juniper Extension Toolkit (JET) support can allow a network based unauthenticated attacker to cause a severe memory exhaustion condition on the device. This can have an adverse impact on the system performance and availability.

This issue only affects devices with JET support running Junos OS 17.2R1 and subsequent releases. Other versions of Junos OS are unaffected by this vulnerability.

Affected releases are Juniper Networks Junos OS:

  • 17.2 versions prior to 17.2R1-S7, 17.2R2-S6, 17.2R3;
  • 17.2X75 versions prior to 17.2X75-D102, 17.2X75-D110;
  • 17.3 versions prior to 17.3R2-S4, 17.3R3;
  • 17.4 versions prior to 17.4R1-S5, 17.4R2;
  • 18.1 versions prior to 18.1R2-S3, 18.1R3.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was found during internal product security testing or research.

This issue has been assigned CVE-2018-0048.
 

Solution:

The following software releases have been updated to resolve this specific issue: 17.2R1-S7, 17.2R2-S6, 17.2R3, 17.2X75-D102, 17.2X75-D110, 17.3R2-S4, 17.3R3, 17.4R1-S5, 17.4R2, 18.1R2-S3, 18.1R3, 18.2R1, 18.2X75-D10, 18.3R1, and all subsequent releases.

This issue is being tracked as PR 1344177 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).
 

Workaround:

Use access lists or firewall filters to limit access to the device only from trusted administrative hosts, networks and users.

Implementation:
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/.

 
Modification History:
‚Äč2018-10-10: Initial publication

CVSS Score:
7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Severity Level:
High
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

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