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Debian Security Advisory DSA 2789-1 (strongswan - Denial of service and authorization bypass)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
A vulnerability has been found in the ASN.1 parser of strongSwan, an IKE daemon used to establish IPsec protected links. By sending a crafted ID_DER_ASN1_DN ID payload to a vulnerable pluto or charon daemon, a malicious remote user can provoke a denial of service (daemon crash) or an authorization bypass (impersonating a different user, potentially acquiring VPN permissions she doesn't have).
Affected Software
Affected Software
strongswan on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the oldstable distribution (squeeze), this problem has been fixed in version 4.4.1-5.4. For the stable distribution (wheezy), this problem has been fixed in version 4.5.2-1.5+deb7u2. For the testing distribution (jessie), this problem has been fixed in version 5.1.0-3. For the unstable distribution (sid), this problem has been fixed in version 5.1.0-3. We recommend that you upgrade your strongswan packages.