Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Strongswan | Strongswan | >= 4.0.0, <= 4.6.4 |
| Debian | Debian Linux | 8.0 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- 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
- https://lists.debian.org/debian-lts-announce/2018/09/msg00032.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/201811-16Third Party Advisory
- https://usn.ubuntu.com/3771-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4305Third Party Advisory
- https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-%28cve-2018-
- 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
- https://lists.debian.org/debian-lts-announce/2018/09/msg00032.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/201811-16Third Party Advisory
- https://usn.ubuntu.com/3771-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4305Third Party Advisory
FAQ
What is CVE-2018-16152?
CVE-2018-16152 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 digestAlgorith...
How severe is CVE-2018-16152?
CVE-2018-16152 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-16152?
Check the references section above for vendor advisories and patch information. Affected products include: Strongswan Strongswan, Debian Debian Linux, Canonical Ubuntu Linux.