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Gentoo Linux: CVE-2018-16151: strongSwan: Multiple vulnerabilities

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Gentoo Linux: CVE-2018-16151: strongSwan: Multiple vulnerabilities

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
09/26/2018
Created
03/19/2019
Added
11/27/2018
Modified
12/20/2018

Description

In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data after the encoded algorithm OID during PKCS#1 v1.5 signature verification. Similar to the flaw in the same version of strongSwan regarding digestAlgorithm.parameters, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation when only an RSA signature is used for IKEv2 authentication.

Solution(s)

  • gentoo-linux-upgrade-net-vpn-strongswan

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