Security readout for executives and security teams
This flaw lets a remote attacker potentially fake RSA signatures against affected strongSwan VPN authentication. The business risk is unauthorized impersonation where IKEv2 relies only on RSA signatures and the vulnerable GMP-based implementation is used. Exposure is most likely on strongSwan VPN deployments before 5.7.0 using the gmp plugin for RSA signature verification in IKEv2. The bundle does not provide CPEs or a complete affected-platform inventory. Treat as high priority for externally reachable VPN infrastructure because successful exploitation could undermine identity assurance and permit impersonation. Patch affected strongSwan systems promptly, especially internet-facing gateways. Mitigation focus: Upgrade strongSwan to 5.7.0 or a distribution package that backports the fix.; Prioritize VPN gateways using the gmp plugin and RSA signatures for IKEv2 authentication.; Review Debian, Ubuntu, Gentoo, or SUSE advisories for package-specific fixed versions..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-347: Exact CWE lookup
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Open ATT&CK lookupCVE-2018-16151 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- DSA-4305CVE reference · vendor-advisory, x_refsource_DEBIAN
- GLSA-201811-16CVE reference · vendor-advisory, x_refsource_GENTOO
- https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-%28cve-2018-16151%2C-cve-2018-16152%29.htmlCVE reference · x_refsource_CONFIRM
- [debian-lts-announce] 20180926 [SECURITY] [DLA 1522-1] strongswan security updateCVE reference · mailing-list, x_refsource_MLIST
- USN-3771-1CVE reference · vendor-advisory, x_refsource_UBUNTU
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Verification of Cryptographic Signature
Improper Verification of Cryptographic Signature represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.