CVE-2023-38316
When the custom unescape callback is enabled, attackers can execute arbitrary OS commands by inserting them into the URL portion of HTTP GET requests.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.08%). 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 version 10.1.2. When the custom unescape callback is enabled, attackers can execute arbitrary OS commands by inserting them into the URL portion of HTTP GET requests. Affected OpenNDS Captive Portal before version 10.1.2 fixed in OpenWrt master, OpenWrt 23.05 and OpenWrt 22.03 on 28. August 2023 by updating OpenNDS to version 10.1.3.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.08% probability · 63th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-116
- 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.