Security readout for executives and security teams
strongSwan installations using the GMP RSA implementation may have accepted malformed PKCS#1 v1.5 signatures. In specific IKEv2 deployments, a remote unauthenticated attacker could forge authentication signatures and impersonate a peer. Business urgency is highest for VPN gateways relying on RSA signatures and older strongSwan versions. Exposure is most likely on VPN or IPsec systems running strongSwan before 5.7.0 with the gmp plugin, RSA signature authentication, and small public exponents. Systems using distributor-patched packages may already be fixed; confirm against Debian, Ubuntu, Gentoo, or SUSE advisories as applicable. Treat as high priority for internet-facing VPN infrastructure because successful exploitation could undermine peer authentication. Patch older strongSwan systems promptly, especially where VPN trust boundaries protect sensitive networks or privileged access paths. Mitigation focus: Upgrade strongSwan to 5.7.0 or a vendor-fixed package.; Apply the relevant Debian, Ubuntu, Gentoo, or SUSE security update.; Review whether the gmp plugin is enabled on exposed VPN gateways..
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-2018-16152 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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.