strongswan: Multiple vulnerabilities (CVE-2018-16151, CVE-2018-16152)
CVE-2018-16151: 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.
References:
https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-(cve-2018-16151,-cve-2018-16152).html
https://nvd.nist.gov/vuln/detail/CVE-2018-16151
Patches:
https://download.strongswan.org/patches/27\_gmp\_pkcs1\_verify\_patch/strongswan-5.3.1-5.6.0\_gmp-pkcs1-verify.patch
https://download.strongswan.org/patches/27\_gmp\_pkcs1\_verify\_patch/strongswan-5.6.1-5.6.3\_gmp-pkcs1-verify.patch
CVE-2018-16152: 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 in the
digestAlgorithm.parameters field during PKCS#1 v1.5 signature
verification. Consequently, 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.
References:
https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-(cve-2018-16151,-cve-2018-16152).html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-16152
Patches:
https://download.strongswan.org/patches/27\_gmp\_pkcs1\_verify\_patch/strongswan-5.3.1-5.6.0\_gmp-pkcs1-verify.patch
https://download.strongswan.org/patches/27\_gmp\_pkcs1\_verify\_patch/strongswan-5.6.1-5.6.3\_gmp-pkcs1-verify.patch
(from redmine: issue id 9482, created on 2018-09-27, closed on 2018-10-04)
- Relations:
- child #9483 (closed)
- child #9484 (closed)
- child #9485 (closed)
- child #9486 (closed)
- child #9487 (closed)