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CVE-2009-0790

The pluto IKE daemon in Openswan and Strongswan IPsec 2.6 before 2.6.21 and 2.4 before 2.4.14,...

5.0 MediumFix available

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 (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) 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.

Exploit likelihood

3.21%Down 0.6 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.0

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 (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) 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.

Record
CVE-2009-0790
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

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 (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) 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.

Record
CVE-2009-0790
Updated
2026-11-02
EUVDEUVD-2009-0788 No score

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 (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) 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.

Record
EUVD-2009-0788
Updated
2026-11-03
GitHub AdvisoriesGHSA-xf8f-c2h7-7qmc No score

The pluto IKE daemon in Openswan and Strongswan IPsec 2.6 before 2.6.21 and 2.4 before 2.4.14,...

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 (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) 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.

Record
GHSA-xf8f-c2h7-7qmc
Weakness
CWE-20
Updated
2026-11-02
OSV No score

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 (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) 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.

Record
CVE-2009-0790
Updated
2026-11-02
OSVDEBIAN-CVE-2009-0790 No score

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 (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) 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.

Record
DEBIAN-CVE-2009-0790
Updated
2026-11-02
OSVopenSUSE-SU-2024:10579-1 No score

strongswan-5.3.5-1.1 on GA media

These are all security issues fixed in the strongswan-5.3.5-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10579-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
strongswan
Debian:12
 before 4.2.14-1
4.2.14-1
strongswan
Debian:13
 before 4.2.14-1
4.2.14-1
strongswan
Debian:14
 before 4.2.14-1
4.2.14-1
strongswan
Debian:4.0
 before 2.8.0+dfsg-1+etch1, plus listed versions
2.8.0+dfsg-1
2.8.0+dfsg-1+etch1
strongswan
Debian:5.0
 before 4.2.4-5+lenny1, plus listed versions
4.2.4-5
4.2.4-5+lenny1
openswan
Debian:4.0
From an advisory covering 2 CVEs
 before 1:2.4.6+dfsg.2-1.1+etch1, plus listed versions
1:2.4.6+dfsg.2-1.1
1:2.4.6+dfsg.2-1.1+etch1
openswan
Debian:5.0
From an advisory covering 2 CVEs
 before 1:2.4.12+dfsg-1.3+lenny1, plus listed versions
1:2.4.12+dfsg-1.3
1:2.4.12+dfsg-1.3+lenny1
openswan
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:2.6.14-1.el5_3.2
0:2.6.14-1.el5_3.2
openswan-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:2.6.14-1.el5_3.2
0:2.6.14-1.el5_3.2
openswan-doc
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:2.6.14-1.el5_3.2
0:2.6.14-1.el5_3.2
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Affected packages
PackageAffectedFixed
openswan
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.6.14-1.el5_3.2
0:2.6.14-1.el5_3.2
openswan-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.6.14-1.el5_3.2
0:2.6.14-1.el5_3.2
openswan-doc
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:2.6.14-1.el5_3.2
0:2.6.14-1.el5_3.2
strongswan
openSUSE:Tumbleweed
From an advisory covering 11 CVEs
 before 5.3.5-1.1
5.3.5-1.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-0790 is a medium vulnerability (CVSS 5.0) in Strongswan, published March 30, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.21%, the 88th percentile. Fixed in strongswan 4.2.14-1.

References

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