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…

Description

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.

Scores

EPSS (exploitation in 30 days)

3.2% · top 12% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (17)

• openswan-strongswan-dpd-dos(49523) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• 34494 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:11171 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 34472 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• DSA-1759 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• ADV-2009-0886 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 1021949 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 34546 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20090330 CVE-2009-0790: ISAKMP DPD Remote Vulnerability with Openswan & Strongswan IPsec (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 34483 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.openswan.org/CVE-2009-0790/CVE-2009-0790.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
• 1021950 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• http://download.strongswan.org/CHANGES4.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SR:2009:009 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• RHSA-2009:0402 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• DSA-1760 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 34296 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-0790](https://trackcve.app/badge/CVE-2009-0790.svg)](https://trackcve.app/cve/CVE-2009-0790)

Record last updated 7 Aug 2024, 04:48 UTC.