Denial of Service Vulnerability in OpenNDS affecting Sierra Wireless ALEOS
CVE-2023-38321

7.5HIGH

Key Information:

Vendor

Sierra Wireless

Vendor
CVE Published:
25 December 2023

What is CVE-2023-38321?

OpenNDS, utilized in Sierra Wireless ALEOS versions prior to 4.17.0.12, contains a vulnerability that allows remote attackers to exploit it by sending a specially crafted GET request to the /opennds_auth/ endpoint. If the GET request is lacking a custom query string parameter and client-token, it triggers a NULL pointer dereference, resulting in a daemon crash and potential captive portal outages. This vulnerability poses a significant risk as it can disrupt service availability.

References

https://openwrt.org/docs/guide-user/services/captive-port...
https://github.com/openNDS/openNDS/blob/master/ChangeLog
https://source.sierrawireless.com/-/media/support_downloa...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2023-38321 : Denial of Service Vulnerability in OpenNDS affecting Sierra Wireless ALEOS