CVE-2006-5873
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.31% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 82.8% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2006-12-12 00:00Z19 YR AGO
- Last updated
- 2024-08-07 20:04Z2 YR AGO
- Reserved
- 2006-11-14
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- No CWE assigned
- Data version
- 5.1
- Document digest
- 5d06d516199c152ee6feccbdb31caca8e4f97aa9fbefaf6fc8e139d29de6efb2
05 Affected products
06 References
- secunia.com23333http://secunia.com/advisories/23333
- sourceforge.nethttp://sourceforge.net/project/shownotes.php?group_id=97282&release_id=468202
- secunia.com23230http://secunia.com/advisories/23230
- l2tpns.cvs.sourceforge.nethttp://l2tpns.cvs.sourceforge.net/l2tpns/l2tpns/cluster.c?r1=1.53&r2=1.54
- exchange.xforce.ibmcloud.coml2tpns-heartbeat-dos(30732)https://exchange.xforce.ibmcloud.com/vulnerabilities/30732
- www.debian.orgDSA-1230http://www.debian.org/security/2006/dsa-1230
- www.vupen.comADV-2006-4860http://www.vupen.com/english/advisories/2006/4860
- www.securityfocus.com21443http://www.securityfocus.com/bid/21443
07 Fixed in
Debian 12
- l2tpns Fixed in 2.1.21-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- l2tpns Fixed in 2.1.21-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- l2tpns Fixed in 2.1.21-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.