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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Openswan, IPsec-Tools: Vulnerabilities in ISAKMP Protocol implementation
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200512-04
(Openswan, IPsec-Tools: Vulnerabilities in ISAKMP Protocol implementation)
The Oulu University Secure Programming Group (OUSPG) discovered that
various ISAKMP implementations, including Openswan and racoon (included
in the IPsec-Tools package), behave in an anomalous way when they
receive and handle ISAKMP Phase 1 packets with invalid or abnormal
A remote attacker could craft specific packets that would result in a
Denial of Service attack, if Openswan and racoon are used in specific,
There is no known workaround at this time.
All Openswan users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/openswan-2.4.4"
All IPsec-Tools users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose net-firewall/ipsec-tools
Network Security Threat Level: Low
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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