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
Link | Resource |
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https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-(cve-2018-16151,-cve-2018-16152).html | Mitigation Patch Technical Description Vendor Advisory |
https://www.debian.org/security/2018/dsa-4305 | Third Party Advisory |
https://usn.ubuntu.com/3771-1/ | Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2018/09/msg00032.html | Mailing List Third Party Advisory |
https://security.gentoo.org/glsa/201811-16 | Third Party Advisory |
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html | |
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html | |
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html |
Configurations
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Information
Published : 2018-09-26 14:29
Updated : 2019-11-30 17:15
NVD link : CVE-2018-16151
Mitre link : CVE-2018-16151
JSON object : View
CWE
CWE-347
Improper Verification of Cryptographic Signature
Products Affected
debian
- debian_linux
canonical
- ubuntu_linux
strongswan
- strongswan