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Vulnerability · Published Nov 17, 2023 · Assigned by mitre

CVE-2023-41101

Critical 9.8

In plain English

A critical-severity security flaw in the opennds package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.9%top 20.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

An issue was discovered in the captive portal in OpenNDS before version 10.1.3. get_query in http_microhttpd.c does not validate the length of the query string of GET requests. This leads to a stack-based buffer overflow in versions 9.x and earlier, and to a heap-based buffer overflow in versions 10.x and later. Attackers may exploit the issue to crash OpenNDS (Denial-of-Service condition) or to inject and execute arbitrary bytecode (Remote Code Execution). Affected OpenNDS before version 10.1.3 fixed in OpenWrt master and OpenWrt 23.05 on 23. November by updating OpenNDS to version 10.2.0.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12openndsno fix listedDEBIAN-CVE-2023-41101
Debian:13opennds10.2.0+dfsg-1DEBIAN-CVE-2023-41101

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References