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Debian Security Advisory DSA 2483-1 (strongswan)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to strongswan announced via advisory DSA 2483-1.
Insight
Insight
An authentication bypass issue was discovered by the Codenomicon CROSS project in strongSwan, an IPsec-based VPN solution. When using RSA-based setups, a missing check in the gmp plugin could allow an attacker presenting a forged signature to successfully authenticate against a strongSwan responder. The default configuration in Debian does not use the gmp plugin for RSA operations but rather the OpenSSL plugin, so the packages as shipped by Debian are not vulnerable. For the stable distribution (squeeze), this problem has been fixed in version 4.4.1-5.2. For the testing distribution (wheezy), this problem has been fixed in version 4.5.2-1.4. For the unstable distribution (sid), this problem has been fixed in version 4.5.2-1.4.
Solution
Solution
We recommend that you upgrade your strongswan packages.