CVE-2023-23903 DoS via SAML configuration in Guardian/CMC before 22.6.2

What is CVE-2023-23903?

CVE-2023-23903 is a medium-severity denial of service vulnerability in Nozomi Networks CMC, published on 9 Aug 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An authenticated administrator can upload a SAML configuration file with the wrong format, with the application not checking the correct file format. Every subsequent application request will return an error.

The whole application in rendered unusable until a console intervention.

Weakness: CWE-1286

Which versions are affected by CVE-2023-23903?

It affects 2 products.

Products include Nozominetworks Cmc, Nozominetworks Guardian.

How do I fix CVE-2023-23903?

No fix has been published for CVE-2023-23903 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-23903 being exploited?

There is no known exploitation of CVE-2023-23903 in the wild and no public exploit code.

Other vulnerabilities in Nozomi Networks CMC

• CVE-2023-29245 SQL Injection on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0 Critical 9.2
• CVE-2026-31984 DoS through oversized audit log entries in Guardian/CMC before 26.2.0 High 8.7
• CVE-2023-2567 Authenticated SQL Injection on Query functionality in Guardian/CMC before 22.6.3 and 23.1.0 High 8.7
• CVE-2023-22378 Authenticated Blind SQL Injection on sorting in Guardian/CMC before 22.6.2 High 8.7
• CVE-2023-23574 Authenticated Blind SQL Injection on alerts count in Guardian/CMC before 22.6.2 High 8.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-fp89-4294-45q3.