CVE-2019-0042

Incorrect messages from Juniper Identity Management Service (JIMS) can trigger Denial of Service or firewall bypass conditions for SRX series devices

Description

Juniper Identity Management Service (JIMS) for Windows versions prior to 1.1.4 may send an incorrect message to associated SRX services gateways. This may allow an attacker with physical access to an existing domain connected Windows system to bypass SRX firewall policies, or trigger a Denial of Service (DoS) condition for the network.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 1.1.4 and all subsequent releases. If suspicious or unusual usernames or IP addresses entries are present in the SRX auth table, they need to be removed from the SRX auth table.

Workaround:

  • On the domain controller(s), edit GPO policy for Computer Configuration->Policies->Windows Settings->Security Settings->Local Policies->Audit Policy. Uncheck "Failure" for "Audit account logon events". This option is unchecked by default. In the cmd prompt, enter "gpupdate /force" to immediately update the policy change.

Category

4.2
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory juniper.net
Affected: Juniper Networks Juniper Identity Management Service
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA10934 mitigation vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-0042?
CVE-2019-0042 has been scored as a medium severity vulnerability.
How to fix CVE-2019-0042?
To fix CVE-2019-0042: The following software releases have been updated to resolve this specific issue: 1.1.4 and all subsequent releases. If suspicious or unusual usernames or IP addresses entries are present in the SRX auth table, they need to be removed from the SRX auth table.
Is CVE-2019-0042 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-0042 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-0042?
CVE-2019-0042 affects Juniper Networks Juniper Identity Management Service.
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