CVE-2011-4073

openswan: use-after-free vulnerability leads to DoS

Severity Score

5.3

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Use-after-free vulnerability in the cryptographic helper handler functionality in Openswan 2.3.0 through 2.6.36 allows remote authenticated users to cause a denial of service (pluto IKE daemon crash) via vectors related to the (1) quick_outI1_continue and (2) quick_outI1 functions.

Una vulnerabilidad de uso de memoria previamente liberada en la funcionalidad del manejador auxiliar criptográfico en Openswan versión 2.3.0 hasta 2.6.36, permite a los usuarios autenticados remotos causar una denegación de servicio (bloqueo del demonio pluto IKE) por medio de vectores relacionados con las funciones (1) quick_outI1_continue y (2) quick_outI1.

Multiple vulnerabilities has been discovered and corrected in openswan. The IPSEC livetest tool in Openswan 2.4.12 and earlier, and 2.6.x through 2.6.16, allows local users to overwrite arbitrary files and execute arbitrary code via a symlink attack on the in many distributions and the upstream version, this tool has been disabled. The pluto IKE daemon in Openswan and Strongswan IPsec 2.6 before 2.6.21 and 2.4 before 2.4.14, and Strongswan 4.2 before 4.2.14 and 2.8 before 2.8.9, allows remote attackers to cause a denial of service (daemon crash and restart) via a crafted R_U_THERE_ACK Dead Peer Detection IPsec IKE Notification message that triggers a NULL pointer dereference related to inconsistent ISAKMP state and the lack of a phase2 state association in DPD. Various other issues have also been addressed.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-10-18 CVE Reserved
2011-11-17 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors
CWE-416: Use After Free

CAPEC

References (10)

URL	Tag	Source
http://www.openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt	X_refsource_confirm
http://www.securityfocus.com/bid/50440	Vdb Entry
http://www.securitytracker.com/id?1026268	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://secunia.com/advisories/46678	2019-07-29
http://secunia.com/advisories/46681	2019-07-29
http://secunia.com/advisories/47342	2019-07-29
http://www.debian.org/security/2011/dsa-2374	2019-07-29
http://www.redhat.com/support/errata/RHSA-2011-1422.html	2019-07-29
https://access.redhat.com/security/cve/CVE-2011-4073	2011-11-02
https://bugzilla.redhat.com/show_bug.cgi?id=748961	2011-11-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.3.0 Search vendor "Xelerance" for product "Openswan" and version "2.3.0"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.3.1 Search vendor "Xelerance" for product "Openswan" and version "2.3.1"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.0 Search vendor "Xelerance" for product "Openswan" and version "2.4.0"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.1 Search vendor "Xelerance" for product "Openswan" and version "2.4.1"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.2 Search vendor "Xelerance" for product "Openswan" and version "2.4.2"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.3 Search vendor "Xelerance" for product "Openswan" and version "2.4.3"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.4 Search vendor "Xelerance" for product "Openswan" and version "2.4.4"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.5 Search vendor "Xelerance" for product "Openswan" and version "2.4.5"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.6 Search vendor "Xelerance" for product "Openswan" and version "2.4.6"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.7 Search vendor "Xelerance" for product "Openswan" and version "2.4.7"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.8 Search vendor "Xelerance" for product "Openswan" and version "2.4.8"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.9 Search vendor "Xelerance" for product "Openswan" and version "2.4.9"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.10 Search vendor "Xelerance" for product "Openswan" and version "2.4.10"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.11 Search vendor "Xelerance" for product "Openswan" and version "2.4.11"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.12 Search vendor "Xelerance" for product "Openswan" and version "2.4.12"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.4.13 Search vendor "Xelerance" for product "Openswan" and version "2.4.13"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.0 Search vendor "Xelerance" for product "Openswan" and version "2.5.0"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.0 Search vendor "Xelerance" for product "Openswan" and version "2.5.0"		sbs4		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.0 Search vendor "Xelerance" for product "Openswan" and version "2.5.0"		sbs5		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.01 Search vendor "Xelerance" for product "Openswan" and version "2.5.01"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.02 Search vendor "Xelerance" for product "Openswan" and version "2.5.02"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.03 Search vendor "Xelerance" for product "Openswan" and version "2.5.03"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.04 Search vendor "Xelerance" for product "Openswan" and version "2.5.04"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.05 Search vendor "Xelerance" for product "Openswan" and version "2.5.05"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.06 Search vendor "Xelerance" for product "Openswan" and version "2.5.06"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.07 Search vendor "Xelerance" for product "Openswan" and version "2.5.07"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.08 Search vendor "Xelerance" for product "Openswan" and version "2.5.08"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.09 Search vendor "Xelerance" for product "Openswan" and version "2.5.09"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.10 Search vendor "Xelerance" for product "Openswan" and version "2.5.10"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.11 Search vendor "Xelerance" for product "Openswan" and version "2.5.11"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.12 Search vendor "Xelerance" for product "Openswan" and version "2.5.12"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.13 Search vendor "Xelerance" for product "Openswan" and version "2.5.13"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.14 Search vendor "Xelerance" for product "Openswan" and version "2.5.14"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.15 Search vendor "Xelerance" for product "Openswan" and version "2.5.15"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.16 Search vendor "Xelerance" for product "Openswan" and version "2.5.16"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.17 Search vendor "Xelerance" for product "Openswan" and version "2.5.17"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.5.18 Search vendor "Xelerance" for product "Openswan" and version "2.5.18"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.01 Search vendor "Xelerance" for product "Openswan" and version "2.6.01"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.02 Search vendor "Xelerance" for product "Openswan" and version "2.6.02"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.03 Search vendor "Xelerance" for product "Openswan" and version "2.6.03"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.04 Search vendor "Xelerance" for product "Openswan" and version "2.6.04"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.05 Search vendor "Xelerance" for product "Openswan" and version "2.6.05"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.06 Search vendor "Xelerance" for product "Openswan" and version "2.6.06"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.07 Search vendor "Xelerance" for product "Openswan" and version "2.6.07"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.08 Search vendor "Xelerance" for product "Openswan" and version "2.6.08"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.09 Search vendor "Xelerance" for product "Openswan" and version "2.6.09"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.10 Search vendor "Xelerance" for product "Openswan" and version "2.6.10"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.11 Search vendor "Xelerance" for product "Openswan" and version "2.6.11"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.12 Search vendor "Xelerance" for product "Openswan" and version "2.6.12"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.13 Search vendor "Xelerance" for product "Openswan" and version "2.6.13"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.14 Search vendor "Xelerance" for product "Openswan" and version "2.6.14"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.15 Search vendor "Xelerance" for product "Openswan" and version "2.6.15"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.16 Search vendor "Xelerance" for product "Openswan" and version "2.6.16"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.17 Search vendor "Xelerance" for product "Openswan" and version "2.6.17"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.18 Search vendor "Xelerance" for product "Openswan" and version "2.6.18"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.19 Search vendor "Xelerance" for product "Openswan" and version "2.6.19"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.20 Search vendor "Xelerance" for product "Openswan" and version "2.6.20"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.21 Search vendor "Xelerance" for product "Openswan" and version "2.6.21"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.22 Search vendor "Xelerance" for product "Openswan" and version "2.6.22"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.23 Search vendor "Xelerance" for product "Openswan" and version "2.6.23"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.24 Search vendor "Xelerance" for product "Openswan" and version "2.6.24"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.25 Search vendor "Xelerance" for product "Openswan" and version "2.6.25"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.26 Search vendor "Xelerance" for product "Openswan" and version "2.6.26"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.27 Search vendor "Xelerance" for product "Openswan" and version "2.6.27"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.28 Search vendor "Xelerance" for product "Openswan" and version "2.6.28"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.29 Search vendor "Xelerance" for product "Openswan" and version "2.6.29"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.30 Search vendor "Xelerance" for product "Openswan" and version "2.6.30"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.31 Search vendor "Xelerance" for product "Openswan" and version "2.6.31"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.32 Search vendor "Xelerance" for product "Openswan" and version "2.6.32"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.33 Search vendor "Xelerance" for product "Openswan" and version "2.6.33"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.34 Search vendor "Xelerance" for product "Openswan" and version "2.6.34"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.35 Search vendor "Xelerance" for product "Openswan" and version "2.6.35"		-		Affected
Xelerance Search vendor "Xelerance"		Openswan Search vendor "Xelerance" for product "Openswan"				2.6.36 Search vendor "Xelerance" for product "Openswan" and version "2.6.36"		-		Affected