PT-2023-26359 · Opennds+1 · Opennds+1

Published 2023-12-25 · Updated 2024-01-03 · CVE-2023-38321

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenNDS versions prior to 4.17.0.12

Description The issue allows remote attackers to cause a denial of service through a GET request to "/opennds auth/" that lacks a custom query string parameter and client-token, resulting in a NULL pointer dereference, daemon crash, and Captive Portal outage.

Recommendations For versions prior to 4.17.0.12, update to version 4.17.0.12 or later to resolve the issue. As a temporary workaround, consider restricting access to the "/opennds auth/" endpoint until a patch is available. Avoid using the endpoint without a custom query string parameter and client-token to minimize the risk of exploitation.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2023-38321

Affected Products

Debian

Opennds

References · 13

• https://security-tracker.debian.org/tracker/CVE-2023-38321 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-38321 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-38321 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-38321 · Security Note
• https://source.sierrawireless.com/-/media/support_downloads/security-bulletins/pdf/swi-psa-2023-006-r3.ashx · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-38321 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-38321 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-38321 · Security Note
• https://github.com/openNDS/openNDS/blob/master/ChangeLog · Note
• https://twitter.com/CVEnew/status/1739199218407879017 · Twitter Post
• https://t.me/cvenotify/65109 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1739246232734740621 · Twitter Post
• https://openwrt.org/docs/guide-user/services/captive-portal/opennds · Note