CVE catalog

CVE-2023-41101

opennds affected and fixed versions

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.

Severity: Medium
Published: Nov 17, 2023, 6:15:34 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.89% · Oct 27, 2026

Projects and upstream resources

[opennds][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "opennds",
      "status": "fixed",
      "release": "sid",
      "version": "10.3.1+dfsg-1"
    },
    {
      "name": "opennds",
      "status": "fixed",
      "release": "trixie",
      "version": "10.3.1+dfsg-1"
    },
    {
      "name": "opennds",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "9.10.0-1"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1059452,
      "name": "opennds",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "10.2.0+dfsg-1"
    },
    {
      "bug": 1059452,
      "name": "opennds",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "10.2.0+dfsg-1"
    },
    {
      "bug": 1059452,
      "name": "opennds",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "end-of-life",
      "fixed_version": ""
    }
  ],
  "distribution_packages": []
}

[Debian bug #1059452]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[opennds]Unknown
Details (2)
- 9.10.0-1 · all · bookworm
  Affected
  dsa · opennds · debian · bookworm; dsa · opennds · debian · 12
- 9.10.0-1 · all · bookworm
  Affected
  dsa · opennds · debian · bookworm; dsa · opennds · debian · 12
[opennds-daemon]Unknown
Source package: [opennds]
Details (2)
- 9.10.0-1 · amd64 · bookworm
  Affected
  dsa · opennds · debian · bookworm; dsa · opennds · debian · 12
- 9.10.0-1 · arm64 · bookworm
  Affected
  dsa · opennds · debian · bookworm; dsa · opennds · debian · 12
[opennds-daemon-common]Unknown
Source package: [opennds]
Details (2)
- 9.10.0-1 · all · bookworm
  Affected
  dsa · opennds · debian · bookworm; dsa · opennds · debian · 12
- 9.10.0-1 · all · bookworm
  Affected
  dsa · opennds · debian · bookworm; dsa · opennds · debian · 12

[Debian 13 (Trixie)]

[opennds]Unknown
Details (2)
- 10.3.1+dfsg-1 · all · trixie
  Fixed · Fixed: 10.2.0+dfsg-1
  dsa · opennds · debian · 13
- 10.3.1+dfsg-1 · all · trixie
  Fixed · Fixed: 10.2.0+dfsg-1
  dsa · opennds · debian · 13
[opennds-daemon]Unknown
Source package: [opennds]
Details (2)
- 10.3.1+dfsg-1 · amd64 · trixie
  Fixed · Fixed: 10.2.0+dfsg-1
  dsa · opennds · debian · 13
- 10.3.1+dfsg-1 · arm64 · trixie
  Fixed · Fixed: 10.2.0+dfsg-1
  dsa · opennds · debian · 13
[opennds-daemon-common]Unknown
Source package: [opennds]
Details (2)
- 10.3.1+dfsg-1 · all · trixie
  Fixed · Fixed: 10.2.0+dfsg-1
  dsa · opennds · debian · 13
- 10.3.1+dfsg-1 · all · trixie
  Fixed · Fixed: 10.2.0+dfsg-1
  dsa · opennds · debian · 13

Observed: Oct 28, 2026, 5:43:20 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]