Note:
This project will be discontinued after December 13, 2021. [more]
2018-09-26
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.
Products | Ubuntu_linux, Debian_linux, Strongswan |
Type | Improper Verification of Cryptographic Signature (CWE-347) |
First patch | - None (likely due to unavailable code) |
Links |
• http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html
• https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-%28cve-2018-16151%2C-cve-2018-16152%29.html • https://security.gentoo.org/glsa/201811-16 • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html • https://lists.debian.org/debian-lts-announce/2018/09/msg00032.html |