Multiple vulnerabilities have been reported in libreswan, which can be exploited by malicious, local users to manipulate certain data and by malicious people to cause a DoS (Denial of Service).
1) An error when handling IKE packets in the "process_packet()" method (pluto/demux.c) can be exploited to cause a restart of libreswan via a specially crafted IKE packet.
2) An error when handling IKE notification packets in the "ikev2parent_inI1outR1()" function (pluto/ikev2_parent.c) can be exploited to cause a restart of libreswan via a specially crafted IKE notification packet without KE payload.
3) The application insecurely creates the /var/tmp/libreswan-nss-pwd file when handling the libreswan.spec files for RHEL and Fedora packages, which can be exploited to manipulate certain data.
The vulnerabilities are reported in version 3.6.
Solution: Update to version 3.7.
Provided and/or discovered by: 1) The vendor credits Paul Wouters and D. Hugh Redelmeier.
2, 3) Reported by the vendor.
Original Advisory: libreswan:
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Subject: libreswan Multiple Vulnerabilities
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