NULL pointer dereference in Opennds Captive Portal
CVE-2023-38313
An issue was discovered in OpenNDS Captive Portal before 10.1.2. it has a do_binauth NULL pointer dereference that can be triggered with a crafted GET HTTP request with a missing client redirect query string parameter. 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 version 10.1.2 fixed infixed in OpenWrt master, OpenWrt 23.05 and OpenWrt 22.03 on28. August 2023 by updating OpenNDS to version 10.1.3.
EPSS: 0.010 (57.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Opennds Captive_portal
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org
- cve@mitre.org
Frequently asked questions
- What is CVE-2023-38313?
- CVE-2023-38313 is a high-severity vulnerability in Opennds Captive Portal, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2023-11-17.
- How severe is CVE-2023-38313?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-38313 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.