CVE catalog

CVE-2006-5873

l2tpns: CVE-2006-5873

[CVE catalog]

Severity
High
Published
Source
[NVD] · [CVE record]
EPSS
2.31% · Oct 25, 2026

Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial of service via a large heartbeat packet.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianl2tpnssid2.5.0-1fixed
Debianl2tpnsforky2.5.0-1fixed
Debianl2tpnstrixie2.4.1-3fixed
Debianl2tpnsbookworm2.4.1-1fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianl2tpnssourcesid2.1.21-1mediumNot reported[401742]
Debianl2tpnssourceforky2.1.21-1mediumNot reported[401742]
Debianl2tpnssourcetrixie2.1.21-1mediumNot reported[401742]
Debianl2tpnssourcebookworm2.1.21-1mediumNot reported[401742]

[Debian bug #401742]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [l2tpns]Fixed

    Source package: [l2tpns]

    Details (2)

    • 2.4.1-1+b1 · amd64 · bookworm

      Fixed · Fixed: 2.1.21-1

      dsa · l2tpns · debian · bookworm; dsa · l2tpns · debian · 12

    • 2.4.1-1+b1 · arm64 · bookworm

      Fixed · Fixed: 2.1.21-1

      dsa · l2tpns · debian · bookworm; dsa · l2tpns · debian · 12

[Debian 13 (Trixie)]

  • [l2tpns]Fixed
    Details (4)

    • 2.4.1-3 · amd64 · trixie

      Fixed · Fixed: 2.1.21-1

      dsa · l2tpns · debian · 13

    • 2.4.1-3 · arm64 · trixie

      Fixed · Fixed: 2.1.21-1

      dsa · l2tpns · debian · 13

    • 2.5.0-1~bpo13+1 · amd64 · trixie-backports

      Fixed · Fixed: 2.1.21-1

      dsa · l2tpns · debian · 13

    • 2.5.0-1~bpo13+1 · arm64 · trixie-backports

      Fixed · Fixed: 2.1.21-1

      dsa · l2tpns · debian · 13

Observed:

References

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