medium
5
CWE
20 476
Advisory Published
Updated

CVE-2009-0790: Input Validation

First published: Wed Apr 01 2009(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
strongSwan=2.4.3
strongSwan=2.4.2
strongSwan=2.8.0
strongSwan=4.2.6
strongSwan=2.8.1
strongSwan=2.4.4
strongSwan=2.6.0
strongSwan=4.2.12
strongSwan=4.2.10
strongSwan=2.8.8
strongSwan=2.8.4
strongSwan=4.2.9
strongSwan=2.6.2
strongSwan=2.4.0
strongSwan=2.8.3
strongSwan=4.2.3
strongSwan=4.2.5
strongSwan=4.2.8
strongSwan=4.2.0
strongSwan=2.6.1
strongSwan=4.2.1
strongSwan=2.8.7
strongSwan=2.4.1
strongSwan=4.2.13
strongSwan=2.8.6
strongSwan=4.2.11
strongSwan=4.2.4
strongSwan=2.6.4
strongSwan=2.4.0a
strongSwan=4.2.7
strongSwan=4.2.2
strongSwan=2.8.5
strongSwan=2.8.2
strongSwan=2.6.3
Openswan=2.4.1
Openswan=2.4.2
Openswan=2.4.3
Openswan=2.4.4
Openswan=2.4.5
Openswan=2.4.9
Openswan=2.4.10
Openswan=2.6.03
Openswan=2.6.04
Openswan=2.6.05
Openswan=2.6.06
Openswan=2.6.07
Openswan=2.6.08
Openswan=2.6.09
Openswan=2.6.10
Openswan=2.6.11
Openswan=2.6.12
Openswan=2.6.13
Openswan=2.6.14
Openswan=2.6.15
Openswan=2.6.16
Openswan=2.6.17
Openswan=2.6.18
Openswan=2.6.19
Openswan=2.6.20
Openswan=2.4.0

Remedy

http://www.debian.org/security/2009/dsa-1759

Remedy

http://www.debian.org/security/2009/dsa-1760

Remedy

http://www.securityfocus.com/bid/34296

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Reference Links

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.

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