CVE-2009-0790

no score yetEPSS 3.2%

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.

EPSS: 3.2% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2009-04-01
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

strongswan:strongswan
xelerance:openswan

References

http://download.strongswan.org/CHANGES4.txt
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00010.html
http://secunia.com/advisories/34472
http://secunia.com/advisories/34483
http://secunia.com/advisories/34494

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