2015-01 Security Bulletin: Junos: Privilege escalation vulnerability (CVE-2014-6384)

Product Affected

This issue can affect any product or platform running Junos OS 12.1 and later.

Severity

High

Severity Assessment (CVSS) Score

7.3 (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)

Problem

Due to a problem with processing authorization attributes containing double quotes within the TACACS+ configuration, authenticated local users may be allowed to run commands that should be denied to them by policy. This represents a privilege escalation risk.

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

No other Juniper Networks products or platforms are affected by this issue.

This issue has been assigned CVE-2014-6384 .

Solution

The following software releases have been updated to resolve this specific issue: 12.1X44-D45, 12.1X46-D25, 12.1X47-D15, 12.3R9, 12.3X48-D25, 13.1R4-S3, 13.2R6, 13.3R5, 13.3R7-S1, 14.1R3, 14.1X53-D35, 14.2R4-S1, 14.2R1 and all subsequent releases.

This issue is being tracked as PR 989199 and is visible on the Customer Support website.

KB16765 [juniper.net] - "In which releases are vulnerabilities fixed?" describes which release vulnerabilities are fixed as per our End of Engineering and End of Life support policies.

How to obtain fixed software:

Security vulnerabilities in Junos are fixed in the next available Maintenance Release of each supported Junos version. In some cases, a Maintenance Release is not planned to be available in an appropriate time-frame. For these cases, Service Releases are made available in order to be more timely. Security Advisory and Security Notices will indicate which Maintenance and Service Releases contain fixes for the issues described. Upon request to JTAC, customers will be provided download instructions for a Service Release. Although Juniper does not provide formal Release Note documentation for a Service Release, a list of "PRs fixed" can be provided on request.

Workaround

Do not use double quotes in TACACS+ configuration for user authorization attributes.

Severity Assessment

Information for how Juniper Networks uses CVSS can be found at KB 16446 [juniper.net] "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Modification History

Modification History:

2015-01-14: Initial publication. 2015-01-14: Corrected 12.1X44 release version number. 2016-03-27: Updated with new version details from PR 1108418 linked to master PR. Updated CVSS from v2 to V3.