PatchTheCVECVE-2023-38322: An issue was discovered in OpenNDS Captive Portal before version 10.1.2
CVE-2023-38322 is a high-severity flaw (CVSS 7.5) affecting captive portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in OpenNDS Captive Portal before version 10.1.2. It has a do_binauth NULL pointer dereference that be triggered with a crafted GET HTTP request with a missing User-Agent HTTP header. Triggering this issue results in crashing OpenNDS (a Denial-of-Service condition). The issue occurs when the client is about to be authenticated, and can be triggered only when the BinAuth option is set. Affected OpenNDS Captive Portal before
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.0% (top 38%) |
| CISA exploited list | No |
| Weakness | CWE-476 |
| Published | 2023-11-17 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-38322?
captive portal: upgrade to 10.1.2. Exact commands for each OS are on this page.
Is CVE-2023-38322 being exploited?
CVE-2023-38322 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-38322 affect?
CVE-2023-38322 affects captive portal. Severity is high (CVSS 7.5). An issue was discovered in OpenNDS Captive Portal before version 10.1.2. It has a do_binauth NULL pointer dereference that be triggered with a crafted GET HTTP request with a missing User-Agent HTTP header. Triggering this issue results in
How urgent is CVE-2023-38322?
Priority 47/100. High severity; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2023-38324 MEDIUM 5.3 UPGRADE An issue was discovered in OpenNDS before 10.1.2
- CVE-2023-38320 HIGH 7.5 UPGRADE An issue was discovered in OpenNDS Captive Portal before version 10.1.2
- CVE-2023-38316 CRITICAL 9.8 UPGRADE An issue was discovered in OpenNDS Captive Portal before version 10.1.2
- CVE-2023-38315 HIGH 7.5 UPGRADE An issue was discovered in OpenNDS Captive Portal before version 10.1.2
- CVE-2023-38314 MEDIUM 6.5 UPGRADE An issue was discovered in OpenNDS Captive Portal before version 10.1.2