PT-2023-8808 · Opennds+1 · Opennds+1

Standash + 1 · Published 2023-08-28 · Updated 2024-06-20 · CVE-2023-41101

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions OpenNDS versions prior to 10.1.3

Description An issue was discovered in the captive portal in OpenNDS. The get query function in http microhttpd.c does not validate the length of the query string of GET requests, leading to a buffer overflow. This can result in a Denial-of-Service condition or allow attackers to inject and execute arbitrary bytecode, achieving Remote Code Execution. The issue can be exploited by sending specially crafted GET requests.

Recommendations For OpenNDS versions prior to 10.1.3, update OpenNDS to version 10.2.0 to fix the issue. As a temporary workaround, consider restricting access to the captive portal or disabling the get query function in http microhttpd.c until a patch is available.

Fix

RCE

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2024-02012

CVE-2023-41101

Affected Products

Debian

Opennds

References · 20

• https://github.com/openNDS/openNDS/commit/c294cf30e0a2512062c66e6becb674557b4aed8d · Patch
• https://bdu.fstec.ru/vul/2024-02012 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-41101 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-41101 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-41101 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-41101 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-41101 · Security Note
• https://ubuntu.com/security/CVE-2023-41101 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-41101 · Vendor Advisory
• https://github.com/openwrt/routing/commit/88c98c910acccab694b3afb6d36d70ca429118a6 · Note
• https://github.com/openNDS/openNDS/releases/tag/v10.1.3 · Note
• https://github.com/openNDS/openNDS/commit/69dde77927b252e2a4347170504a785ac5d50c33 · Note
• https://vuldb.com/?id.245686 · Note
• https://t.me/cvenotify/83897 · Telegram Post
• https://twitter.com/fletch_ai/status/1732869439089951166 · Twitter Post