CVE-2018-16152
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 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. This is a variant of CVE-2006-4790 and CVE-2014-1568.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-16152
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-16152.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201809-4
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 5.7.0-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 5.7.0-1 |
| debian | bullseye | fixed | 5.7.0-1 |
| debian | forky | fixed | 5.7.0-1 |
| debian | sid | fixed | 5.7.0-1 |
| debian | trixie | fixed | 5.7.0-1 |
References
Verify integrity in audit chain (admin only). AS-IS.