CVE-2006-3121 json
The peel_netstring function in cl_netstring.c in the heartbeat subsystem in High-Availability Linux before 1.2.5, and 2.0 before 2.0.7, all…
published 2006-08-17 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-3118
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 13.6%
- EPSS 13.6% chance of exploitation in 30 days, percentile 96%
- public exploits
- 1
- Exploit-DB
Summary
The peel_netstring function in cl_netstring.c in the heartbeat subsystem in High-Availability Linux before 1.2.5, and 2.0 before 2.0.7, allows remote attackers to cause a denial of service (crash) via the length parameter in a heartbeat message.
Patch / fix
- heartbeat Debian 14, Debian 13, Debian 12 1.2.4-14
debian advisories DEBIAN-CVE-2006-3121
- securityfocus.com/bid/19516 patch
- linux-ha.org/SecurityIssues patch
- debian.org/security/2006/dsa-1151 advisory
Timeline
- First public exploit (EDB-28386)
- Published
Exploit prediction
13.59% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-28386 Linux-HA Heartbeat 2.0.6 - Remote Denial of Service dos, 2006-08-13
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-399 Resource Management Errors
References
-
debian.org
/security/2006/dsa-1151
vendor-advisory, patch
-
securityfocus.com
/bid/19516
vdb-entry, patch
-
linux-ha.org
/SecurityIssues
patch
-
security.gentoo.org
/glsa/glsa-200608-23.xml
vendor-advisory
-
mandriva.com
/security/advisories?name=MDKSA-2006:142
vendor-advisory
-
ubuntu.com
/usn/usn-335-1
vendor-advisory
-
secunia.com
/advisories/21629
third-party-advisory, vendor-advisory
-
secunia.com
/advisories/21511
third-party-advisory, vendor-advisory
-
secunia.com
/advisories/21505
third-party-advisory, vendor-advisory
-
secunia.com
/advisories/21518
third-party-advisory, vendor-advisory
-
vupen.com
/english/advisories/2006/3288
vdb-entry, vendor-advisory
-
secunia.com
/advisories/21521
third-party-advisory, vendor-advisory
- linux-ha.org /_cache/SecurityIssues__sec03.txt
-
exchange.xforce.ibmcloud.com
/vulnerabilities/28396
vdb-entry
Sources
- CVE List CVE-2006-3121
- NVD CVE-2006-3121
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