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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.96% probability · 59th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- opennds/captive portal
- Source
- cve@mitre.org
References
- https://github.com/openNDS/openNDS/releases/tag/v10.1.2Release Notes, Vendor Advisory
- https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80
- https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006-v4/#sthash.2vJg3d85.rwx82g1C.dpbs
- https://github.com/openNDS/openNDS/releases/tag/v10.1.2Release Notes, Vendor Advisory
- https://github.com/openwrt/routing/commit/0b19771fb2dd81e7c428759610aed583171eed80
- https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006-v4/#sthash.2vJg3d85.rwx82g1C.dpbs
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.