CVE-2009-0790: Input Validation
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) RUTHERE or (2) RUTHEREACK 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.
Affected Software
Remediation
Patch Available
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2009-0790?
CVE-2009-0790 is classified as a denial of service vulnerability that can lead to daemon crashes.
How do I fix CVE-2009-0790?
To resolve CVE-2009-0790, upgrade to Openswan or Strongswan versions 2.6.21 or higher, or 2.4.14 or higher respectively.
Which software is affected by CVE-2009-0790?
CVE-2009-0790 affects Openswan and Strongswan versions prior to 2.6.21 for Openswan and 2.4.14 for Strongswan.
What kind of attack can exploit CVE-2009-0790?
CVE-2009-0790 can be exploited by remote attackers sending specially crafted R_U_THERE or R_U_THERE_ACK packets.
Is there a known workaround for CVE-2009-0790?
There are no widely recommended workarounds for CVE-2009-0790 other than applying the necessary software updates.