CVE-2017-2331

CVE-2017-2331 is a high-severity vulnerability in Juniper Northstar Controller with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

A firewall bypass vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow a network-based malicious attacker to bypass firewall policies, leading to authentication bypass methods, information disclosure, modification of system files, and denials of service.

Frequently asked questions

What is CVE-2017-2331?
A firewall bypass vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow a network-based malicious attacker to bypass firewall policies, leading to authentication bypass methods, information disclosure, modification of system files, and denials of service.
How severe is CVE-2017-2331?
CVE-2017-2331 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2017-2331 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-2331?
CVE-2017-2331 affects Juniper Northstar Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-2331?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-2331 published?
CVE-2017-2331 was published on 2017-04-24 and last updated on 2026-06-17.

References

Affected products (1)

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